ciP->informat as input to 4 mongo functions
NOFORMAT as default value for format
Merge branch 'develop' into feature/informat_input_to_selected_mongo_functions
CHANGE default format in mongoSubscribe*() and mongoUpdate*Subscription() method to XML (closer to the original implmentation)
ADD FIXME comment
ADD format in csubs and casubs collections at mongoBackend layer upon subscription creation or update
FIX unwanted change introduced in past PR in assoc*.test
ADD functionality to use the JSON/XML format from database in csubs and casubs collection and send notifications according to it
ADD unit test to cover JSON/XML format specification in subscriptions
FIX in unit test
FIX added priority level to FIXME messages introcuded recently
Merge pull request #79 from telefonicaid/feature/informat_input_to_selected_mongo_functions

Feature/informat input to selected mongo functions