Edited admin.py, added the IndexModulesAsync template

admin.py:

	-Added jinja2/os imports
	-Added logging import, now logs operations as needed
	- Added IndexModulesAsync request handler, generates a page that asynchronously calls IndexModules via jQuery
	-Ignore commented code: it was an attempt to control the Google App Engine task queue asynchronously (and failed spectacularly)

templates/IndexModulesAsync.html

	-template that handles loading of a page asynchronously
	-may be renamed to a more generic name
	-expects 2 parameters:
		-label - sets the initial label text
		-async_op - the operation to call, relative to the page location
	-may be overhauled in the future