made less_not_compiled a context processor; fix SPOT-871
made is_mobile a context processor; fix SPOT-870
made ga_tracking_id a context processor; fix SPOT-872
Merge branch 'SPOT-871'

Conflicts:
	context_processors.py
	views/contact.py
	views/home.py
Merge branch 'SPOT-872'

Conflicts:
	context_processors.py
	views/contact.py
	views/error.py
	views/home.py
Merge branch 'master' of github.com:uw-it-aca/spacescout_web