Merge pull request #629 from sergeyklay/feature-bootstrap-3

Characters Counter
Update feature: Update cerber theme with #623
Update feature: Update cerber theme
Fixed issue: Admin css cleanup for widgets and dashboard
Fixed issue: Better admin shortcuts on dashboard
Update feature: Remove form copy.css
Update feature: Remove default copy.css
Fixed issue: Column background color with greet DataTables
Update feature: Minor sql icon changes
Update feature: Minor sql icon changes
Fixed issue: Fixed with admin shortcuts loop.
Fixed issue: Fix widget icon in previous commit
New feature: Added Redis cache driver
Fixed issue: Removed Thumbs.db not needed in public repo