Feature/oq hazard

This merge contains the work done for hazard so far. There are still some issues that can have continued development in the future:

• Openquake has a bug with does not allow many requests to be submitted at the same time. A proper review of options has to be done, and awaiting an answer from the ticket submitted to the OQ team
• There are a few issues with stopping the flow during the dispatch and collection of results to openquake that need to be tested properly
• there are buttons that we want, see another ticket #79 (closed). have added a reset button for hazard to enable easier testing but others are more complex or were not high enough priority to be dealt with yet
• There were occasional timeouts from the synchronous thread worker, and not sure why

the ramsis datamodel has change and will be merged to it's own develop: ramsis.datamodel!20 (merged)