Change width of labels for multiple-choice capa problems to width of text, not 100%

Ned/pylint fixes

Update discussion documentation

Fix typo in output message of rakefile

Forgot to remove registration of onKeyUp function.

Remove keybinding for work in progress (WIP).

Stanford got some feedback from our students/faculty that students
were making accidental clicks on radio-button capa questions.
They would click way to the right of the label text, but it would
still select the corresponding input, which caused some students
to make unintentional changes to their answers.  This was because
labels for these inputs were display:block and width:100%

Changing these labels to float:left clear:both should fix it.

fix gradebook tests

STUD-329

create-dev-env.sh:  if run from repo, set $BASE appropriately

Remove the unused smart-accordion lettuce feature, and the code it used.

Fix 500 error on reactivation email

Remove unused reactivation email function

Jonahstanley/add courseteam tests

Because it bothers me, although I don't expect anyone else to care.

Restore Pylint/Pep8 reports

Shibboleth Auth

test suite, so the clean reports command doesn't blow
away the reports.

Changed a click to css_click and fixed earlier typo

Report Dir Acceptance Test Fix

Fix pylint violations in xmodule static_content.py

directory is created before it is cleaned.

Clean tests step now removes stale coverage report files.

* Changed unicode test cases to ascii encoding
* Removed 'stanford' hardcoding in TOS logic in lieu of
  'SHIB_DISABLE_TOS' MIT_FEATURES flag
* made 'external_auth' always an installed_app in lms
* log.exception changd to log.error where appropriate

But: did not change skipping tests to changing settings, for
reasons stated here:
https://github.com/edx/edx-platform/pull/67#issuecomment-19790330