Update existing tests and provide new ones to test new paradigm.

This standardizes the XModule field default values to be the same as the
values that are presented by studio when a component is added to a
course.

Conflicts:

	lms/templates/staff_problem_info.html
	lms/xmodule_namespace.py

made a special 'module preview' view for Static Tabs in the CMS. Per Tom, he'd like just the Display Name to show up in the static tab editor until the end-user clicks the Edit button

make course about view methods render the about content as a module, so we get all the url rewriting goodness. Also, since we're now handling the url re-writing via the module get_html pipelines, we can remove the link rewriting inside the xmodules itself - which is good because there's a wierd bug in lxml.html rewriting

* in-progress to fixing support for ':' in url_names

window, add xqa modal window, add xqa_key to course metadata

replace_urls

html is in a veritical)

replace_urls