Fixed issue: More minor fixes in Feed Class
Fixed issue: PHPDoc fixes
Fixed issue: Fixed cache issue, removed not needed action_view
Fixed issue: Removed redundant code, added missed link
New feature: Added Date::amounts_min
Updated translation: Amended Russian
New feature: Added feed ttl settings
Updated feature: Added ttl support
Updated feature: Now feed ttl also is cache ttl
Fixed issue: Fixed RSS item id (guid)
Merge pull request #404 from sergeyklay/master

Feed fixes & addidions