Added themes for the forum:
The user can select a theme's style and change the visibility of the forum

Added new functionality:
User can see who tagged him
Tool icons added to other pages

Add support for all forum categories
Improved CSS Styles

Added new functionality:
- improved user post rating functionality
- added user ratings
- User can add another user as friend
- User can add posts and pages to saved places, so that later he can return from the pop-up list quickly
- automatic user navigation history saving, so that later he can return from the pop-up list quickly
- User can view the latest posts of other users in a pop-up window
- User can view their own profile page with own rating and statistics

corrected: user_id detection problem