WS-31: Submit capability request view

Another merge request, another Pyramid view; this time for submitting capability requests.

I also hooked up the front end to use the new endpoint.

Sorry for the large-ish size. If you have any questions about anything in here, let me know.

services/capability/capability/views/capability_request.py

@@ -41,7 +41,7 @@ def create_capability_request(request: Request) -> Response:
     Pyramid view that accepts a request to create a capability request
     URL: capability/{capability_name}/request/create
 
-    :param request: POST request, expecting JSON parameters ["parameters", "versions"]
+    :param request: POST request, expecting JSON parameter "parameters"
     :return: Response with JSON-formatted info of newly created capability request
         or 400 response (HTTPBadRequest) if expected parameters not given
         or 412 response (HTTPPreconditionFailed) if capability with given name does not exist and thus cannot be
@@ -91,7 +91,7 @@ def submit_capability_request(request: Request) -> Response:
     Pyramid view that accepts a request to submit a capability request
     URL: capability/{capability_name}/request/{request_id}/submit
 
-    :param request: POST request, expecting JSON parameters ["parameters", "versions"]
+    :param request: POST request
     :return: Response with
         or 412 response (HTTPPreconditionFailed) if capability request with given ID does not exist and thus cannot be
         submitted