Made Edb.create() return self
Added a copy function to edb.emfacdb to copy emfacs between edbs
Added unittest.skip to pyAirviro.tests
Skipped test_get_download_entitlement in the test_ihs module
Made DatabaseStream more generic and moved it into a new db sub-package
Added X1 and Y1 explicitly to all Source instantiations in the tests
Added a domain property to Domain class to turn it into a database identifier
Added a ShipTimeSeriesStream and helpers to the indico.series module
Merge branch 'topic/ts' into develop

- Made DatabaseStream more generic and moved it into a new db sub-package.
- Added a ShipTimeSeriesStream and helpers to the indico.series module.