Database v2 handling

Databases object have seen a new version since beat.core#64.

However the online platform does not handle yet the protocol template objects relate to the version 2 of the database object.

This ticket tracks the work relate to that.

Tasks to be done:

• Implement application for handling ProtocolTemplate object
• Implement installation of protocol templates
• Implement handling of database v2 in the databases application
• Ensure execution of experiment can continue with both v1 and v2 databases

This work will need update to the initial data provided through beat/beat.examples>