Add method to clear mako template lookups

Quick and dirty fix (edxapp.startup.run is called twice, once before
loading the configuration, so the paths defined in lms.startup are
basically ignored).
Fix typo in transcripts_utils.
Do not allow students to pin/unpin forum threads

The wrong permission was being checked for pinning/unpinning, so a
sufficiently clever student could pin and unpin threads.

JIRA: FOR-499
Remove coursename from page H1, and slightly improve sequence navigation
Make i18n tests quieter
pep8
Fixes LMS-2352 by unifying :hover and :focus styles.
Adding ability to give an attribute callback for CAS
Release Notes for 3-18-14

Doc-195
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Ensure that mongo modulestore can create its data directory if it does not exist on disk
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refactor static tab tests
Merge pull request #2704 from edx/adam/refactor-static-tab-tests

refactor static tab tests
Ensure account creation succeeds before creating comments service user

Also improves handling in cases where account creation did succeed, but
comments service user creation did not.

Depends on commit 88abdd8a0b20bc9816f487b25abdea1953f5661d in https://github.com/edx/cs_comments_service

JIRA: FOR-522
Make all i18n scripts use argparse, handle --verbose flag
Added message to run during i18n tests to inform people that test_generate takes a long time
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