Added columns "kind" and "comment" to report model.
Use AR counter_cache to keep Item#report_count up to date.
Moved uniquess check from db index to AR validation.
Added support for posting kind and comment parameters to reports.
Updated schema.
Removed uniqueness validation on Report.
Added endpoint for fetching list of reports for a given item.
Added temporary fix - must have create access to be able to read actions and reports.
Fixed tests. Removed temporary access check on actions, since it takes wildcard uids.
Merge pull request #5 from bengler/report_kind_and_comment

Report kind and comment