ADD basic functionality for queryContext working (unit test pending)
ADD all the test for redirected query context
ADD context providers mongobackend redirect for updateContext (unit test pending)
FIX some typos in context providers functionality for queryContext
ADD unit test completing the context providers redirect at mongoBackend for updateContext
FIX test harness
FIX issues raised during code review
FIX make mongoContextProvidersQuery test stronger
FIX typo in comment
Merge branch 'feature/499_basic_ctx_providers' into task/mongobackend_redirect_response
ADD entry in CHANGES_NEXT_RELEASE
Merge pull request #503 from telefonicaid/task/mongobackend_redirect_response

mongoBackend "redirect" to context provideres for queryContext and updateContext operations
Some order in testEnv.sh + Harness tests can now start 1-3 Context Providers
First (still unfinished) harness test for queries witgh context provider redirection
pre-implementation of query_redirect_operation.test
functional tests for ngsi10 update with redirection to context providers
queries seem to work now
uncached queries, part 1
A few fixes during pre-PR review
CHANGES_NEXT_RELEASE was already updated ...