Fix keyboard shortcuts

Snapshot fixes and changes to snapshot list

Snapshot cleanup did not work due to time.Now syntax error. Added test
for it as well to catch any future errors.

Added error and debug logging so that it is possible to see any errors in the future.

Removed an unused configuration value and deprecated the remove expired snapshots
setting.

New folder and permissions API

If creating a new folder/dashboard created/updated and createdby/updatedby should always be set.
If updating an existing folder/dashboard updated and updatedby should always be set.

* dashboards: fix save as dashboard from folder to general folder

* dashboards: disable save button in save dashboard as dialog when creating a new folder

Move api calls to backend_srv

Use message returned from backend and use that as alert success response to user

added hash rate units for monitoring mining processes

Admins can see all snapshots. Other roles can only see their own
snapshots.

Added permission check for deleting snapshots - admins can delete
any snapshot, other roles can delete their own snapshots or
snapshots that they have access to via dashboard permissions.

From /api/dashboards/id/:id/acl to /api/dashboards/id/:id/permissions

Copy of prometheus1 docker-compose config.

* heatmap: fix chart height

* heatmap: fix font size

* heatmap: fix legend size

* heatmap: fix rendering tests