Documentation need to update according to framework main features.

1. Installing
2. General functionality documentation
   1. Permission system explanation
   2. Logging to application
   3. Application icons meanings
   4. Main window
   5. Explaining clean cache purpose
3. Users, groups, roles, departments management
   1. Working with groups
   2. Working with roles
   3. Working with users
4. Explaining architecture
   1. Folders structure
   2. Custom page layouts for different modules/views
   3. Passing parameters from view to main page layout.
   4. Explaining module.php file.
   5. Creating first module
   6. How to add another language?
   7. How to remove index.php from url?
   8. How to allow anonymous users access module views?
   9. How to use automatic permission checking?
5. Application main classes usage recomendations
   1. erLhcoreClassDesign
   2. erTranslationClassLhTranslation
   3. erLhcoreClassModule
   4. erLhcoreClassCacheSystem