i07t06: Introduction of Memcached in both Coral and Lionfish

Python-based Lionfish client has been updated. #131
Merge branch 'lionfish' of https://github.com/OceanVision/ocean into mantis_shrimp
Clean-up graph_workers directory. By mistake

removed web_crawler_tests. Sry Konrad! We will fix that
i07t06: Introduction of Memcached in both Coral and Lionfish

Lionfish has been updated.
Few modifications
Working REST console, fixed build.sbt
Added lib folder to mark that it is necessary
Merge branch 'lionfish' of https://github.com/OceanVision/ocean into lionfish

Conflicts:
	lionfish/src/main/scala/com/lionfish/server/DatabaseManager.scala
Merge branch 'mantis_shrimp' of https://github.com/OceanVision/ocean into lionfish

Conflicts:
	lionfish/src/main/scala/com/lionfish/server/DatabaseManager.scala
	lionfish/src/main/scala/com/lionfish/utils/Config.scala
	scripts/ocean_small_exemplary_data.py
Integration with new server and client, missing create_model
Merge branch 'lionfish' of https://github.com/OceanVision/ocean into mantis_shrimp
Extended don corleone config parsing
Lionfish_scala working