El-aap

el_aap_api: refactor authentication and authorization
el_aap_api: rename FilterMixIn
el_aap_api: first bunch of unit tests for all controllers

bugfix: wrong usage of format in in logging messages

fix dependencies in setup.py

more logging for el_aap and el_aap_api
fix some minor bugs

fix broken endpints
enable detailed debug logging for el_aap
create new ElasticSearchProxy model, and that is now used by all controllers in el_aap

el_aap: fix broken authorization
el_aap: add missing / resource
el_aap: allow /_plungin to deliver non json content
el_aap_cli: allow resource updates with partial attributes

el_aap*: allow to connect to mongodb replica sets