sfy-data & sfy-dashboard: move to separate repository

The sfy-data and dashboard components should be moved to a separate repository, so that it fits better with the use for OMBs as well.

A few things that need to be sorted out:

granular access permissions, I think:
- token for different groups, devices can be associtated with many groups
- 0 is public group
- need to have token for all devices
- devices may be organized based on patterns into groups
- and need to be modifiable from some command line tool probably.
should probably get ready for postgres and kubernetes so that we're less sensitive to server failures.

@jerabaul29

gauteh / sfy