* Support for adding ranodm questions from "Top" categories

* Display "Top" categories in the category filter when listing questions in the question bank
* Prevent editing "Top" categories
* Prevent deleting "Top" categories

Create "Top" categories along with the default categories when they don't exist

Upgrade script to add a "Top" category as a real category to the question bank

David Mudrák authored Jan 31, 2018 and Jake Dallimore committed Feb 01, 2018

The call to the class 'repository' introduced in the commit d05c2ac7
didn't fully work and threw: "Exception - Class 'repository' not found".
This fixes the missing library inclusion.

To avoid code duplication when creating new web services we need to
move code to a function chat_get_sessions.

   AMOS BEGIN
    MOV [blocktitle,blog],[configtitle,block_blog_tags]
   AMOS END