Added json validation dependancy
Added schema definition
Added more types
Added schema endpoint
Updated jsonschema url
removed useless questions in FAQ
Merge branch 'feature/json-schema-validation' into develop
Disabled validation for object-like ontologie
CACHE_BYPASS_URLS in settings to list the api urls where middleware's cache doens't have to deal with it
added new questions
Merge remote-tracking branch 'origin/develop' into develop

Conflicts:
	app/detective/topics/common/summary.py
Convert tab to space
Merge remote-tracking branch 'origin/develop' into develop
test_export_csv updated
Cache middleware
increment topic cache on patch and creation #597
makefile.test: dont't stop on error during syncdb
utils.get_model_fields() : return a generator
get_models return a generator and get_syntax refactored
test for composite bulk upload