SmartHomeNG Release v1.3

Merge branch 'release-helper2'

* release-helper2: (330 commits)
  Changed .gitmodules: submodule „plugins“ branch set to master
  Adjusted version to 1.3
  logics.rst fix
  items.rst removed on space
  items.rst: updated 1 more yaml block
  fixed items.rst
  item.rst: added yaml
  doc: Added links to the forum and the github-wiki to the main page
  doc: Removed nignx.md from list of plugin-READMEs
  doc: Added release notes for v1.3
  Small changes to docu
  Small changes to docu
  Fix import error handling in database classes
  Theme changes to doc
  smarthome.yaml.default: updated yaml examples in commented lines
  changes plugins in TOCTREE appearance, removed visu and renamed openenergy lower case
  typo
  Major reworking of project documentation
  Moved depricated files from tools directory to depricated/tools
  prevent startup as root user

Release v1.3

SmartHomeNG Version 1.2

v1.2

Merge branch 'release-1.2'

Version 1.1

Version 1.1, merge from develop to master