Bamboo pybamboo

Fixes broken bamboo rest service:
* updates were broken due to API change
* First submission did not create bamboo dataset (think we maybe lost submission nº2)
* migrated it to pybamboo so we don't care about API changes
* Added a test which tests both the creation of the DS and updates so hopefully we'll know early if it breaks.

`restservice` app tests passes. Waiting for travis on the overall machinery.