Added table nav section.
Add form create.
Added paginator sort.
Changing in "admin_index" and "admin_delete" methods.
Added "admin_process()" method.
Added "afterSave()" method callback.
Added categories column in table list.
Added "beforeDelete()" method callback.
Remove end tag.
Use request in model
Contain Comment, Tag, User and Category in query.
Add "admin_listBycategory()" action for list posts by category.
Change check user id.
Change paginate array.
Change link when in admin layout.
Change Helper from AdminLayout to Post.
Change in checkbox.