Merge pull request #684 from emanuelschuetze/fixes-for-1.4b2

Fixes for 1.4b2
Fixed #683
Merge pull request #686 from normanjaeckel/Fix_Agenda

Fixed #683
Validator for agenda_start_time aded. PEP8 issue 'missing whitespace after ','' resolved
Insert test to the fix of #677
Merge pull request #685 from normanjaeckel/Issue_677

Validator for agenda_start_time aded.
Fixed #687
Fix #679
Merge pull request #689 from normanjaeckel/FixAccountWidget

Fixed #687
Merge pull request #690 from normanjaeckel/DeleteFeatureRejectVersion

Fix #679
Add tests for the list of speakers global links. Add end_speach link on the list of speakers widget.
Merge pull request #688 from normanjaeckel/Speaker_Widget_Improvement

Add tests for the list of speakers global links. Add end_speach link on ...
Fixed #682 Error if a group was added to a list of speakers
Merge pull request #691 from ostcar/issue-682

Fixed #682 Error if a group was added to a list of speakers
Added en po files  and updated en and fr po files (makemessages only) for transifex.
Merge pull request #694 from emanuelschuetze/translations

For transifex: Added en po files  and updated en and fr po files
Fixed #130: New config var for removal of supports when a motion is edited by the submitter in early state.
Merge pull request #695 from normanjaeckel/RemoveOfSupporters

Fixed #130: New config var for removal of supports when a motion is edit...
Rework of the motion model, to make it more explcit.
Update docstrings, small enhancements to Oskar's motion rework.