Also fixes problems with double-quoted strings (historical artifact).

STUD-640

Conflicts:

	common/lib/xmodule/xmodule/video_module.py

update tests to call definition_to_xml rather than export_to_xml, which presumes writing to a filesystem, plus it adds a url_name to the attribute set. Also, on __init__ reset the 'category' attribute, on some code paths this can get lost. Not sure why, but this gets all the tests to pass.

export_to_xml() really should be definition_to_xml() since we'll rely on the base method that is in xml_module.py to preserve the correct export filesystem hierarchy.

Fix error seen in combinedopenended modules

Hotfix/adam/help modal

instructor dash fixes

Coffee compile command now executes for just *.coffee items.

Add new setting to cms project

Migration videoalpha module to one main video module

Change console logging stream from stdout to stderr

Enable beta dashboard, add copy, add i18n

Calc module changes: previewing and <formulaequationinput>

To see individual commits, see tag peterb/formula-preview/presquash

Named `FormulaEquationInput` (name up for debate)

- Based off ChemEqnIn
- Add FormulaEquationInput in inputtypes.py
- Add a call to a skeleton method for a preview

javascript:

- Queue up some MathJax
- Put some ordering on the AJAX requests: add a parameter when the request was started, when it returns check that it isn't outdated before displaying the preview
- Tests

Note: we moved the `jsinput` tests and DISABLED them, because they were causing the tests to fail.

- Create a method called `parse_algebra`. It takes a string of math and returns with a `pyparsing.ParseResults` object representing it.
- `evaluator` takes this tree and applies the old "parse actions" to it to get the same number as it used to.
- Change calc's API: `evaluator` to use `case_sensitive` rather than `cs`
- Add most of the capability for latex rendering

Failing JavaScript tests in Firefox

Fix manage.py to ouput the help of the django command if requested

Fix mysql indexing validity in migrations

This resolves an error that would sometimes occur on Mac OS X:
"Error: EMFILE, too many open files"

Blapenta/site packages