Rename section, front end unit/quiz creation, quiz question selection

1.  Functionality to rename sections in the front end instead of having to delete and create new labels when a section needs to be renamed.

2.  When creating a quiz/unit/etc.. in the front end, have the 'Course/Quiz/Etc.. Name' text input focused.  Saves for a lot of time when mass producing units/quizzes/etc..

3.  It would be great to have a large view of all question with checkboxes so when populating large quizzes, question names don't have to all be explicitly typed out.

  Thanks for considering these requests! Cheers PPD