Add logic for returning real location data for SMS

 - Not quite finished yet
 - Just realized that responses have to be manually
   split into messages < 160 chars; a job for tomorrow
Add pagination function with some tests
Add some comments to tests.py
Start adding multi-response support to sms
Get SMS multiple response working, fix some bugs

Also add some logging, callback handler
Add some comments to sms.py
Fix STAGING undefined error in settings.py
Temp commit to save progress
More failed toggle experiments plus some new cluster images
Add logic for returning real location data for SMS

 - Not quite finished yet
 - Just realized that responses have to be manually
   split into messages < 160 chars; a job for tomorrow
Add pagination function with some tests
Add some comments to tests.py
Start adding multi-response support to sms
Get SMS multiple response working, fix some bugs

Also add some logging, callback handler
Add some comments to sms.py
Fix STAGING undefined error in settings.py
Temp commit to save progress
Merge remote-tracking branch 'origin/topic/twilio_logic' into topic/twilio_logic

Conflicts:
	python/ecep/portal/models.py
Merge pull request #84 from dzwarg/staging

Added niceweb/nicemail filters, fixed marker state.
Working toggles in Webkit