Added roundcube library

.htaccess

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+# AddDefaultCharset UTF-8
+AddType text/x-component .htc
+
+<IfModule mod_php5.c>
+# php_value    error_log    logs/errors
+
+php_flag    register_globals            Off
+
+#php_value   session.cookie_path     /
+php_value   session.gc_maxlifetime   21600
+php_value   session.gc_divisor       500
+php_value   session.gc_probability   1
+</IfModule>
+
+<IfModule mod_rewrite.c>
+Options +FollowSymLinks
+RewriteEngine On
+RewriteRule ^favicon\.ico$ skins/larry/images/favicon.ico
+
+# security rules:
+# - deny access to files not containing a dot or starting with a dot
+#   in all locations except installer directory
+RewriteRule ^(?!installer|\.well-known\/|[a-f0-9]{16})(\.?[^\.]+)$ - [F]
+# - deny access to some locations
+RewriteRule ^/?(\.git|\.tx|SQL|bin|config|logs|temp|tests|program\/(include|lib|localization|steps)) - [F]
+# - deny access to some documentation files
+RewriteRule /?(README\.md|composer\.json-dist|composer\.json|package\.xml|Dockerfile)$ - [F]
+</IfModule>
+
+<IfModule mod_deflate.c>
+SetOutputFilter DEFLATE
+</IfModule>
+
+<IfModule mod_headers.c>
+# replace 'append' with 'merge' for Apache version 2.2.9 and later
+#Header append Cache-Control public env=!NO_CACHE
+</IfModule>
+
+<IfModule mod_expires.c>
+ExpiresActive On
+ExpiresDefault "access plus 1 month"
+</IfModule>
+
+FileETag MTime Size
+
+<IfModule mod_autoindex.c>
+Options -Indexes
+</ifModule>

INSTALL

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+INTRODUCTION
+============
+
+This file describes the basic steps to install Roundcube Webmail on your
+web server. For additional information, please also consult the project's
+wiki page at http://trac.roundcube.net/wiki
+
+
+REQUIREMENTS
+============
+
+* The Apache, Lighttpd, Cherokee or Hiawatha web server
+* .htaccess support allowing overrides for DirectoryIndex
+* PHP Version 5.3.7 or greater (but not PHP 7) including
+   - PCRE, DOM, JSON, Session, Sockets (required)
+   - PHP Data Objects (PDO) with driver for either MySQL, PostgreSQL or SQLite (required)
+   - Libiconv, Zip (recommended)
+   - OpenSSL, Fileinfo, Mcrypt, mbstring (optional)
+* PEAR packages distributed with Roundcube or external:
+   - Mail_Mime 1.9.0 or newer
+   - Net_SMTP (latest from https://github.com/pear/Net_SMTP/)
+   - Net_IDNA2 0.1.1 or newer
+   - Auth_SASL 1.0.6 or newer
+   - Net_Sieve 1.3.2 or newer (for managesieve plugin)
+   - Crypt_GPG 1.2.0 or newer (for enigma plugin)
+* php.ini options (see .htaccess file):
+   - error_reporting E_ALL & ~E_NOTICE (or lower)
+   - memory_limit > 16MB (increase as suitable to support large attachments)
+   - file_uploads enabled (for attachment upload features)
+   - session.auto_start disabled
+   - suhosin.session.encrypt disabled
+   - mbstring.func_overload disabled
+   - magic_quotes_runtime disabled
+   - magic_quotes_sybase disabled
+   - register_globals disabled (PHP < 5.4)
+* PHP compiled with OpenSSL to use secure (tls/ssl) connections and to use the spell checker
+* A MySQL (4.0.8 or newer), PostgreSQL, MS SQL Server (2005 or newer) database engine
+  or SQLite support in PHP
+* One of the above databases with permission to create tables
+* An SMTP server (recommended) or PHP configured for mail delivery
+* Composer installed either locally or globally (optional, for plugin installation)
+
+
+INSTALLATION
+============
+
+1. Decompress and put this folder somewhere inside your document root
+2. Make sure that the following directories (and the files within)
+   are writable by the webserver
+   - /temp
+   - /logs
+3. Create a new database and a database user for Roundcube (see DATABASE SETUP)
+4. Point your browser to http://url-to-roundcube/installer/
+5. Follow the instructions of the install script (or see MANUAL CONFIGURATION)
+6. After creating and testing the configuration, remove the installer directory
+7. Check Known Issues section of this file
+
+
+CONFIGURATION HINTS
+===================
+
+Roundcube writes internal errors to the 'errors' log file located in the logs
+directory which can be configured in config/config.inc.php. If you want ordinary
+PHP errors to be logged there as well, enable the 'php_value error_log' line
+in the .htaccess file and set the path to the log file accordingly.
+
+By default the session_path settings of PHP are not modified by Roundcube.
+However if you want to limit the session cookies to the directory where
+Roundcube resides you can uncomment and configure the according line
+in the .htaccess file.
+
+
+DATABASE SETUP
+==============
+
+Note: Database for Roundcube must use UTF-8 character set.
+
+* MySQL
+-------
+Setting up the mysql database can be done by creating an empty database,
+importing the table layout and granting the proper permissions to the
+roundcube user. Here is an example of that procedure:
+
+# mysql
+> CREATE DATABASE roundcubemail /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;
+> GRANT ALL PRIVILEGES ON roundcubemail.* TO roundcube@localhost
+    IDENTIFIED BY 'password';
+> quit
+
+# mysql roundcubemail < SQL/mysql.initial.sql
+
+Note 1: 'password' is the master password for the roundcube user. It is strongly
+recommended you replace this with a more secure password. Please keep in
+mind: You need to specify this password later in 'config/db.inc.php'.
+
+
+* SQLite
+--------
+Versions of sqlite database engine older than 3 aren't supported.
+Database file and structure is created automatically by Roundcube.
+Make sure your configuration points to some file location and that the
+webserver can write to the file and the directory containing the file.
+
+
+* PostgreSQL
+------------
+To use Roundcube with PostgreSQL support you have to follow these
+simple steps, which have to be done as the postgres system user (or
+which ever is the database superuser):
+
+$ createuser -P roundcube
+$ createdb -O roundcube -E UNICODE roundcubemail
+$ psql -U roundcube -f SQL/postgres.initial.sql roundcubemail
+
+Note: in some system configurations you might need to add '-U postgres' to
+createuser and createdb commands.
+
+
+* Microsoft SQL Server
+----------------------
+Language/locale of the database must be set to us_english (1033). More info
+on this at http://trac.roundcube.net/ticket/1488918.
+
+
+Database cleaning
+-----------------
+To keep your database slick and clean we recommend to periodically execute
+bin/cleandb.sh which finally removes all records that are marked as deleted.
+Best solution is to install a cronjob running this script daily.
+
+
+MANUAL CONFIGURATION
+====================
+
+First of all, copy the sample configuration file config/config.inc.php.sample
+to config/config.inc.php and make the necessary adjustments according to your
+environment and your needs. More configuration options can be copied from the
+config/defaults.inc.php file into your local config.inc.php file as needed.
+Read the comments above the individual configuration options to find out what
+they do or read http://trac.roundcube.net/wiki/Howto_Install for even more
+guidance.
+
+You can also modify the default .htaccess file. This is necessary to
+increase the allowed size of file attachments, for example:
+	php_value       upload_max_filesize     2M
+
+
+SECURE YOUR INSTALLATION
+========================
+
+Access through the webserver to the following directories should be denied:
+
+  /config
+  /temp
+  /logs
+
+Roundcube uses .htaccess files to protect these directories, so be sure to
+allow override of the Limit directives to get them taken into account. The
+package also ships a .htaccess file in the root directory which defines some
+rewrite rules. In order to properly secure your installation, please enable
+mod_rewrite for Apache webserver and double check access to the above listed
+directories and their contents is denied.
+
+NOTE: In Apache 2.4, support for .htaccess files has been disabled by
+default. Therefore you first need to enable this in your Apache main or
+virtual host config by with:
+
+ AllowOverride all
+
+
+UPGRADING
+=========
+
+If you already have a previous version of Roundcube installed,
+please refer to the instructions in UPGRADING guide.
+
+
+OPTIMISING
+==========
+
+There are two forms of optimisation here, compression and caching, both aimed
+at increasing an end user's experience using Roundcube Webmail. Compression
+allows the static web pages to be delivered with less bandwidth. The index.php
+of Roundcube Webmail already enables compression on its output. The settings
+below allow compression to occur for all static files. Caching sets HTTP 
+response headers that enable a user's web client to understand what is static
+and how to cache it.
+
+The caching directives used are:
+ * Etags - sets at tag so the client can request is the page has changed
+ * Cache-control - defines the age of the page and that the page is 'public'
+   This enables clients to cache javascript files that don't have private 
+   information between sessions even if using HTTPS. It also allows proxies
+   to share the same cached page between users.
+ * Expires - provides another hint to increase the lifetime of static pages.
+
+For more information refer to RFC 2616.
+
+Side effects:
+-------------
+These directives are designed for production use. If you are using this in
+a development environment you may get horribly confused if your webclient
+is caching stuff that you changed on the server. Disabling the expires 
+parts below should save you some grief.
+
+If you are changing the skins, it is recommended that you copy content to 
+a different directory apart from 'default'.
+
+Apache:
+-------
+To enable these features in apache the following modules need to be enabled:
+ * mod_deflate
+ * mod_expires
+ * mod_headers
+
+The optimisation is already included in the .htaccess file in the top 
+directory of your installation.
+
+If you are using Apache version 2.2.9 and later, in the .htaccess file
+change the 'append' word to 'merge' for a more correct response. Keeping
+as 'append' shouldn't cause any problems though changing to merge will 
+eliminate the possibility of duplicate 'public' headers in Cache-control.
+
+Lighttpd:
+---------
+With Lightty the addition of Expire: tags by mod_expire is incompatible with
+the addition of "Cache-control: public". Using Cache-control 'public' is 
+used below as it is assumed to give a better caching result.
+
+Enable modules in server.modules:
+    "mod_setenv"
+    "mod_compress"
+
+Mod_compress is a server side cache of compressed files to improve its performance.
+
+$HTTP["host"] == "www.example.com" {
+
+    static-file.etags = "enable"
+    # http://redmine.lighttpd.net/projects/lighttpd/wiki/Etag.use-mtimeDetails
+    etag.use-mtime = "enable"
+
+    # http://redmine.lighttpd.net/projects/lighttpd/wiki/Docs:ModSetEnv
+    $HTTP["url"] =~ "^/roundcubemail/(plugins|skins|program)" {
+        setenv.add-response-header  = ( "Cache-Control" => "public, max-age=2592000")
+    }
+
+    # http://redmine.lighttpd.net/projects/lighttpd/wiki/Docs:ModCompress
+    # set compress.cache-dir to somewhere outside the docroot.
+    compress.cache-dir   = var.statedir + "/cache/compress"
+
+    compress.filetype = ("text/plain", "text/html", "text/javascript", "text/css", "text/xml", "image/gif", "image/png")
+}
+
+
+KNOWN ISSUES
+============
+
+Installations with uw-imap server should set imap_disabled_caps = array('ESEARCH')
+in main configuration file. ESEARCH implementation in this server is broken (#1489184).