[#87]: Remove hyphen from sektion's UID

It serves no purpose and can only cause confusion should a student
forget to type the hyphen
Merge pull request #89 from adamarla/master

Register button
If columnifying, then shouldn't the columns be emptied first?
- Items on https://github.com/abhinavc/web-application/issues/85
  rectified. Mostly pertaining to the QuickTrial dialogs.
- QuickTrial in keeping with the font-style elsewhere
Merge remote-tracking branch 'upstream/master'
- typo
Treat .single-line when its within a .modal
[#75]: Added controller action and model method to merge two Account objects together

For now, only Accounts for Students can be merged. Going forward, who knows,
we might need to merge other roles too
[#75]: Allow teachers to add students whilst allowing students to register seprately

Teachers can create a sektion and populate it with students by
providing just their names. But we do not require spreadsheet upload - as
the issue required

Students, however, can register seprately and enter the sektion's UID.
If they don't , then they wouldn't see their graded assignments. The choice is now theirs

But if they do, then the account created by them during registration is merged
with the account created when the teacher added the student's name

Please note that this is only the initial commit. Bug fixes should be
expected and will follow
Merge branch 'master' of github.com:abhinavc/web-application

Conflicts:
	app/assets/stylesheets/bootstrap-overrides.css.scss
Merge branch 'master' of heroku.com:drona

Conflicts:
	app/assets/javascripts/teachers/trigger.js.coffee
Call Levenshtein distance once on the whole name ...

.. instead of calling it once on the first name and once on the last name
[#85]: Specific notifications for specific situations ...

Situations
-----------
1. Said sektion does not exist
2. Student is already enrolled
3. Student cannot enroll because none of pre-existing names is even remotely similar

These should be notifications because they need to show and then go away
on their own automatically. Modals, on the hand, need to persist because
they have active components - like forms and buttons - in them
[#75]: Minor changes to HAML for creating a new sektion
Updating # of pages and path within locker/ when receiving a suggestion

Also, minor edit to logic for loading suggestion preview
Changes required to assign suggestions to examiners as they (suggestions) come in
Minor bug fix
Storing just the SHA1SUM of a suggestion as its signature ...

The full path to scan violates length limit on signature column
Styling changes until something better can be put in place