Added the ability to edit the main menu links.
Minor fixed
Added the ability to add & delete & edit the main menu links
Several substantial changes

1. Merged config files itcms_auth and itcms
2. Module documents renamed to "Knowledge Base"
3. Added the ability to change user password from admin gui
4. Minor fixes
Changes in knowledge base module

1. Fix error in controller kb.php
2. Added the display of additional information about the document in
admin and user interfaces.
Added russian language files
Change alert danger to error
Admin:: KB: using form_validation
Cosmetic changes in templates
Highlighting the current menu item.
Admin:: Pages: using form_validation
Admin:: Changed method of argument checking.
Admin:: Menu: using form_validation
Admin:: Auth: using form_validation
Fix error in itcms_auth_model
Minor changes in languages and views
Changed configuration file
Issue #1
Easy connection css and js files.

1. Added the ability to connect third-party js and css files by
specifying the values ​​of the variables in the controller.
2. Added sorting and filter tables in the admin and the knowledge base.
Admin:: KB:

1. When editing an article is inserted now current category.
2. Changed the system of access rights.