refs https://github.com/TryGhost/Team/issues/1432
- All mocking logic is moved to the dashboard-mocks service
- Added @days property support and loading to first dashboard 4 graphs.
- 2 years state button added
refs: https://github.com/TryGhost/Team/issues/1436
- added in lots of demo graphs using EmberChart
- renamed some files in v5 folder for better conventions
- put each graph for new dashboard into separate components