Add view hook to search#index (#2250)
Render relations table only if there are related work packages
Adds localizations
Introduces an image with an alternate text
Re-implements group toggle in jQuery
Hides expand/collapse all button for text reader
Adds changelog entry
Uses icon font instead of expand/collapse image
Removes superfluous locales
Show / hide work package relations table after AJAX updates


Fixes integration tests
Merge pull request #810 from opf/accessible-work-package-tables-2264
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