Resolves ARGOeu/ARGO/#46

Support time and zulu format in recalculation requests.
Merge pull request #8 from andronat/devel

Resolves ARGOeu/ARGO/#46
Part of ARGOeu/ARGO#47 for Mapping POEMs to APs

Engine now cleans rows that are not matching any AP. Also, we added
support for the new AP schema.