Merge pull request #737 from sergeyklay/master

Cleanup code of Menu class
Fixed issue: Fix password reset errors and reference errors
Fixed issue: Fix menus not displaying

Fixed the menu items issue arised in previous commit f6855b814cf973eaa535af6968b854ac57090a86
Update feature: Using Gleez/Database library instead of Kohana DB library

Using https://github.com/gleez/database and bumped version number to 1.1. This DB class improves performace by reducing RAM and CPU. Presently few features are still missing like db result cache and PDO. Only MySQLi library implemented.
Fixed issue: Fix issue with file get_unique stripping file extention when limit exceeds
Updated Feature: Mark Mysqli ext required during Install. Removed old mysql code.
Fixed issue: Fix minion dry-run and work with new Gleez DB
Update feature: Updated Bootstrap to 3.2
Updated Feature: Updated Fontawesome to 4.1.0
Update Feature: Update System Icons and Bump Version Number
Update Feature: Update the system to work with DataTables 1.10
Update Feature: Update Datables library to 1.10.1
Update Feature: Update greet library
Update feature: Update request class for datatables 1.10
Minor installer css fix