More work on restoring features after moving to plugin model for datasources, no annotations work again #1276 #1472

A lot of work on backend plugin model for frontend components, right now for data sources, will enable dropin plugins for data sources and panels, #1472

New implementation for API Keys that only stores hashed api keys, and the client key is base64 decoded json web token with the unhashed key, Closes #1440

Conflicts:
	pkg/api/apikey.go
	pkg/services/sqlstore/migrations.go

Added permissions section to admin > edit user view, an admin can now make another user admin, Closes #1517

Made a copy of influxdb datasource named influxdb_08 so the main influxdb data source can be modified to support InfluxDB 0.9, made some initial experiments to get queries to work, but a lot more work is needed, #1525

Merge branch 'fixDashboardDelete' of https://github.com/raintank/grafana into raintank-fixDashboardDelete

Conflicts:
	pkg/services/sqlstore/dashboard.go