[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
Merge pull request #181 from adamarla/master

fetch examiner_id to support re-takes
Merge pull request #182 from adamarla/master

Any question can have only one examiner
Remove any overlay when loading quiz preview
Merge pull request #183 from adamarla/master

Use worksheetId as per student quiz Id
Merge pull request #184 from adamarla/master

fixed typo
Allow removal of lines also ..

Till now .lines could only be disabled or hidden.
Removal is required when editing sektions