Small documentation tweaks

Change-Id: I00ed518141b60dfa1c22a11edc391532bf49a0a1
Output name of ini file when it's not valid

This prevents people from confusing the .ini file with .yml file, which
I just did.

Change-Id: I6c96b507049717b7e0ece04b4b50b30c9b6e694b
Added send-to options support to email-ext plugin

- added an ability to select the recipients from the predefined groups,
  such as 'Committers', 'Requester' and 'Culprits'
- added tests for the whole email-ext plugin

Change-Id: I3b03aa1f57f29352121b8501d1fa9fe77383f3b7
Add support for Stash as a repository viewer

Make it possible to use Atlassian Stash as a repository viewer of Git
SCM changes. Also sort the viewers alphabetically.

Change-Id: I6725570a0aa6770b2d0eee2cd0ae5ff0e5c5e07c
Merge "Added send-to options support to email-ext plugin"
Merge "Add support for Stash as a repository viewer"
Merge "Small documentation tweaks"
Merge "Output name of ini file when it's not valid"
README.rst: Remove space before bullets

Causes rendering as block quote.

See:

- http://docutils.sourceforge.net/docs/user/rst/quickref.html#bullet-lists
- http://docutils.sourceforge.net/docs/user/rst/quickref.html#block-quotes

Change-Id: I252d3f19286b11403abbe12faaf11db68b175604
Support Matrix Tie Parent Plugin in wrappers

Change-Id: I9c55ed443496bf4573969f83750c46bd678290a7
Fix some minor typos in the trigger documentation

Change-Id: Ie57ee0fc202a0104d7893212b26bca81b8d0c86e
Minor fixes in the installation documentation

Fix a couple of grammatical errors, and wrap long lines to fit
within 80 columns.

Change-Id: Ide46f5fdc6bb2f0b759fc6e69669097d23149791
Merge "Fix some minor typos in the trigger documentation"
Merge "README.rst: Remove space before bullets"
Merge "Support Matrix Tie Parent Plugin in wrappers"