fix Post::getStream + Post::commentsCount
refactoring user actions
Revert "fix Post::getStream + Post::commentsCount"

This reverts commit 61660253ab4ee932e7491222bcaaac0d64c70f83.
fix Post::getStream + Post::commentsCount
fix Comment::getAuthorName
small fix feedback module
add Category::getChildren
small refactoring LangUrlManager and LangUrlBehavior
small fix feedback admin controller
small fix news module admin panel
small yupe module refactoring and cleanup
now we can allow access to admin panel only for specified ip