apache handler is now in bin
PEP 8 stuff
Added a bootstrap script to create a virtualenv and install requirements into it
Refactored settings a bit.

* Removed warnings of old settings format.
* Added ENV setting TRANSMOGRIFY_SETTINGS to specify a python file to import with all settings
* Existing ENV settings can still override the SETTINGS specified in that file
Added ability to specify separate places for original images vs. result images.
Initial commit of wsgi handler for 404 handling.