Function: Get discussion questions

Filter Hook: Filter the default value of dozent_get_discussion_questions();

Function:

Function:

Filter Hook: Filter the default nicename of dozent user URL

Function: Simplified human_time_diff() to dozent_ago_time()

Function:

Function: Clean, Un-quotes a quoted text and finally convert new line to br tag

Filter Hook: Filter the dozent_text_format(); return value

Function: Complete any course content, useful for Complete lecture | Assignments | Quiz