Merge pull request #383 from sergeyklay/v0.9.24

V0.9.24
Update feature: Set default timezone to UTC
Update feature: Update Cerber Theme
Fixed issue: Clean Gleez Core
Fixed issue: Fix maintenance message
Fixed issue: Fixed PHPDoc in all controllers
Updated feature: Updated PHPDoc in Gleez Core
Update feature: Cerber Theme
Merge pull request #384 from sergeyklay/master

Minor fixes
Fixed issue: Fixed expression in DB::select
Merge pull request #385 from sergeyklay/master

Fixed expression in DB::select
Fixed issue: Added missed DB::expr('COUNT(*)'), remove duplicate of code
Merge pull request #386 from sergeyklay/master

Missed DB::expr fixes
Updated translation: Amended Russian
New feature: Added commentor_avatar class
Fixed issue: Fixed labels, cleanup code, added avatar support if it exist
Fixed issue: Fixed missed DB::expr('COUNT(*)')
Updated feature: Cerber Theme
Fixed issue: Removed not needed Schema.org support
Updated feature: More readable README.md