- upgraded to Bootstrap 3 RC1
- ability to define columns in config.ini
- added json_error and json_success shortcut functions
- language strings defined for a plugin are kept separately
- changed general json return object to contain 'ok': bool and 'msg': string
- ability to define an extra file per plugin (with the same name as the plugin) that will be loaded at runtime
- ability to define exceptions per plugin
- ability to add static functions to the Session class (by plugin for example)
- added methods to the base model class that can be used to call stored procedures and return the result
- added a timezones table and stored procedure to get the list