Allow to specify different rpc user than transmission user

Merge pull request #13 from Nautigsam/feature/user-variables

Add rpc user variable (defaults to transmission_user)

Added rpc bind address and port

Thanks to @ninjatuna3527 for the proposal.

Added rpc host whitelist settings

Thanks to @robgmills for the changes :)

Improved user & group integration + added more options

Note that this is a major upgrade because it drops support for ubuntu trusty & utopic and also for debian wheezy as it includes changes to systemd (which was not included in those versions).

If anyone needs support for that versions can use the version < 2.0.0 or make a PR adding support for all the distributions using different playbook files, so feel free to make a PR if that's the case 😃

Thanks to @aarnaud for the changes 😃

Added more configuration options to the settings template

Merge pull request #4 from robgmills/feat/blocklist-config

Enable configuring of the blocklist

Fixed issue with service start

Revert "Added start handler"

This reverts commit e5fcc16c2036782c05d8586ad47dbc1416af2763.

Closes #1

1.0.0

Minor changes to readme