Use rails label helper in queries form (fixes #2150)
Fix German label translations for query form (#2150)
Add change log entry (#2150)
Reactivate accessibility css

- Added setting to turn accessibility mode on/off for not logged in
  users
merged PR #796, i.e. fix/link-query-form-labels-2150
Remove not needed selenium call from cuke

[skip ci]
Merge pull request #801 from opf/fix/reactivated_accessibility_css