Fix wrong issues appears at Dashboard#issues page

Filtering service used klass instead of passed items.
Because of this you see list of all issues intead of authorized ones.
This commit fixes it so people see only issues they are authorized to
see.

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Add more tests for FilteringService

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Use ace editor as gem

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Fix dashboard atom feed

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
 Merge branch 'ace_editor' into 'master'

Ace Editor as gem
 Merge branch 'bug/filtering_service' into 'master'

Fix wrong issues appears at Dashboard#issues page

Fixes #1028