Bravenewworld skeletons

[jfrohnhofen]

Mailable description of changes:

• storing skeleton tracings in a different backend

Steps to test:

• run testing protocols with lab ;)

List of frontend changes:

• Update actions format changed to this:

	[
	   {
	      "version":7,
	      "timestamp":1505910023150,
	      "actions":[
	         {
	            "name":"createNode",
	            "value":{ ... }
	         },
	         {
	            "name":"createEdge",
	            "value":{ ... }
	         },
	      ],
	      "stats":{
	         "treeCount":1,
	         "nodeCount":6,
	         "edgeCount":5,
	         "branchPointCount":0
	      }
	   },
	   {
	      "version":8,
	      "timestamp":1505910023384,
	      "actions":[
	         {
	            "name":"updateTracing",
	            "value":{ ... }
	         }
	      ],
	      "stats":null
	   }
	]

• This is an array of batched update actions. One batch is the result of one action in the webknossos frontend (e.g.: splitting a tree by removing a node). Each batch has a version number, a timestamp, a list of update actions and optionally a stats object that contains node/edge/.. count statistics.

• jsRoutes were removed

• Annotation, tracing and dataset are now fetched separately (the annotation is the meta data for a tracing, the tracing are the trees, comments and so on)

• there is now a distinction between the annotationId and the tracingId

• several json properties were renamed on the server (look at the server flow types in model.js and api_flow_types.js)

• the view mode (look at dataset only) was refactored to no longer need an annotation and tracing

• the strange form-construct that was used in the advanced dataset list view to start skeleton/volume tracings was replaced with simple links

• routes that start with /data/ (and therefore address the datastore) need a token parameter now (use the doWithToken wrapper method)

• voxels that were labeled during a volume tracing are now pushed to the server using the standard save queue instead of the dedicated push queue

Issues:

• fixes Group skeleton updateActions for proper versions #1900

---

• Ready for review

[daniel-wer]

@hotzenklotz Very thorough testing indeed, thanks a lot! I applied your PR feedback and answered your questions :)