Moves action menu styles to sass
Fixed a small bug in mailer views
New layout for my page and project overview
Defines specific action menu
Adds specific action menu to project modules
Makes project index menu specific
Adds specific menu to admin modules
Also apply new styles for my page to projects overview
Merge branch 'dev' into feature/new_layout_for_my_page

Conflicts:
	doc/CHANGELOG.md
Removes superfluous query index
Adds specific action menu to repository views
Merge pull request #819 from opf/fix/accessibility_alt_text_collapse_expand_on_grouped_work_package_list

[FIX] Accessibility alt text collapse expand on grouped work package list
Adds specific main menu to remaining views
Fixed spec for new project overview
Fixes action menu event binding
Fixes cukes
Merge remote-tracking branch 'origin/dev' into fix/activity-icon-labels-2250
Merge pull request #814 from opf/fix/activity-icon-labels-2250
Adds helper method for menu item locale
Sets menu item 'lang' attribute