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
fixes segfaults caused by stubbing
lessen test ramp-up
Fixes spec
Adds specs
Removes selection of default activities
Restores default selection
Merge pull request #777 from opf/feature/ruby2.1

let's try ruby 2.1
Added user reloading after adding roles
Fixed wrong opening tag
Reverted pushing ruby to 2.1 on travis for consistency
Implemented treating assignees and responsibles differently so there
are no (non-functional) group responsibles anymore
Adds additional specs
Differs between activity view states
Added responsible to bulk update
Added responsible to context menu
Fixed non-functional delete via context menu