Added accepted format info. to upload modal
Merge branch 'master' of heroku.com:drona
Modified logic for finding input[type=file] field ...
Edited tutorial for downloading scanbot ..

Added explanation for why scanbot is needed
New tutorial for how to send suggestions
[student]: Self-enrollment form now in modal instead of dropdown

Also standardized classes for modals
  1. regular
  2. wide
  3. slim
Minor big fix - was erroneously overriding local variable 'html'
[fdb-panel]: Not colouring the whole tab ( one tab per question )
[student console]: Non-responsive 'Quizzes' tab issue fixed

Issue arises due to 'data-prev' set on 'tab-st-rc-1'.
Solution: Change ws/layout to work with params[:id] - if provided - else
assume that layout sought for currently logged in student
- replaced new Scanbot link
- cleaned up, was causing a javascript error anyway