Moves action menu styles to sass
Defines specific action menu
Adds specific action menu to project modules
Makes project index menu specific
Adds specific menu to admin modules
Removes superfluous query index
Adds specific action menu to repository views
Adds specific main menu to remaining views
Fixes action menu event binding
Fixes cukes
Fixes functional tests
Merge remote-tracking branch 'origin/dev' into fix/accessibility_linearisation_of_work_package_show_form_2259

Conflicts:
	app/views/users/show.html.erb
updated bundler to 1.5 as it is required for support of ruby platform 2.1
render prettier errors when trying to add a member without roles/principals
fixes work package status translations
Changelog
let's try ruby 2.1
well try 2.1.0 then
Update Bundler on travis for ruby 2.1
Revert "Update Bundler on travis for ruby 2.1"

apparently we don't need that anymore