restrict owner degradation on model level
add helper methods for modals
add remote option to modal submit button
put permission delete confirmation into modal
make permissions controller catch degradation error
add controller tests for permission degradation
fix permission degradation test
improve permission degradation error message
fix spec (checked for wrong text)
rspec: one expect per it
use super instead of destroy
remove forgotten debug output
add modal body helpers
conform to one expect per it
correct wording in test description
fix redirect on destroy
fix NoMethodError caused by missing argument
Merge branch 'staging' into 902-restrict_owner_degradation

Conflicts:
	config/locales/en.yml
Merge pull request #923 from ontohub/902-restrict_owner_degradation

902 restrict owner degradation