[examiner]: Changed naming nomenclature for audit tabs
 removed some commented out code
Not loading sublimevideo.js. Solution videos not a top priority for now
Rationaled tab styling in override.js

The CSS files are ugggly !!!
Simple stylistic changes :a => :b to a: :b
Temp commit. Do not revert to it ever !!
Merge branch 'master' into dev
Changed .static to .precious

Thats what Gollum would say - my precioussss!
Still more :a => :b --> a: :b changes
No need to destroy attempts when destroying an exam ...

... Let exams destroy worksheets and let worksheets then destroy attempts
[core]: Rationalized / simplified (hopefully) tab behaviour ...

1. Removed all references to nopurge-* classes
2. Side-tabs now report the number of 'relevant' clicks in the corresponding .tab-pane
3. topics/selector used wherever one needs to see verticals and topics
   - will be used to show examiners tagged questions by topic so that
     they can then add hints for those questions
Set data-ping=['true' | 'false'] on a <ul> to allow/disallow ping updates
 Minor stylistic changes
questions/on should also be able to return questions authored by specific examiner

In particular, by the currently logged in examiner
Remove any overlay when loading quiz preview
Allow removal of lines also ..

Till now .lines could only be disabled or hidden.
Removal is required when editing sektions
Further rationalization/simplification of tab behaviour

A <ul> can have the following data-* attributes
  1. ping
  2. lock
  3. solo
[admin]: Dotting the i's and crossing the t's in the new tab-behaviour
Rationalization of classes/attributes that control tab behaviour

Also, added tickers to side tabs to optionally show number of
selections made in the corresponding tab-pane

Got rid of nopurge-*, purge-*, reissue-ajax class attributes.

If tabs share a .tab-pane, then the tab must be reloaded =>
.tab-pane must be purged + tab must be locked

Conflicts:
	app/models/exam.rb