boolean arg to return_study needed for backward compat
refactored but untested
untested push controller
using anydb in peyotl, so pylibmc is not a dependency. yet
avoiding circular import
slight cleanup
add annotations on GET
merged origin
moving config to phylesystem
caching annotations
fixed get_phylesystem(request)
Merge branch 'caching-validation' into local-dep

Conflicts:
	controllers/default.py
typo
added request to phylesystem calls
added ability to GET from SHA
tests for GET sha