ADD stub for unit tests related with mongoUpdateContextRequest for geo-location features
ADD new unit test in the stub
FIX using explicit double in BSON_ARRAY() for coordinates in unit test
ADD create entity with location case
ADD completed append and update location happy cases
FIX removing all unit test trace
ADD delete happy case
ADD fail cases for new entity and append with location metadata
ADD fail cases for update and delete processing location attribute
FIX adjusting failing unit test after last change in update() invokation
FIX queryContext including metaddata location for attributes so defined
FIX issues raised during code review
Merge remote-tracking branch 'origin/task/mongo_crud_location_attr' into task/mongo_crud_location_attr
implemented atoF as an error handling atof function
FIX string2coords and atoF
Merge pull request #268 from telefonicaid/task/mongo_crud_location_attr

CRUD for location attribute in updateContext (and some minor fixes in queryContext)