- added human-readable names to Topology graph

- minor code cleanup

- forced context/topology uuids in backend request for simplicity; to be elaborated
- improved formatting of request to be sent to backend in logs

- reduced log level of InterDomain-related methods to DEBUG

- added feature for deactivating teardowns
- added feature to support infinite-loop request generation

- defined extra-long hold time to have time to validate configurations

- corrected slice_unset query filters

- corrected slice_unset query filters

- corrected slice_unset query filters

- removed check of reply.entity_id==request.entity_id; context computes UUID-like identifiers based from requested identifiers for performance reasons

- added context "admin" as default for slices

- corrected SetService when no endpoints are provided

- corrected device name retrieval
- corrected composition of router_ids and and IP addresses
- minor code formatting

- corrected service name of load generator

- corrected load generator commands

- Corrected Dockerfile

- added dependencies for load generator

- Converted load_gen tool into a microservice
- Added simple WebUI page to manage it
- Created manifests, Dockerfile, etc.
- Created proto file to manage the load generator

- improved device details page

- removed unneeded log messages

- improved name reporting of devices and links

- testing session management

- corrected generation of default uuid for topology entities

- testing session management

- testing session management

- testing session management

- testing session management

- testing session management

- corrected generation of default uuid for context entities

- corrected retrieval of context/topology names

- minor bug resolution

- corrected retrieval of topologies

- added default values to context/topology UUID generation functions
- extended endpoint UUID generation function to allow default values for ontext/topology

- corrected selection of context/topology based on new uuid/name separation

- updated definition of constant DEFAULT_CONTEXT_UUID to DEFAULT_CONTEXT_NAME
- updated definition of constant DEFAULT_TOPOLOGY_UUID to DEFAULT_TOPOLOGY_NAME
- updated definition of constant INTERDOMAIN_TOPOLOGY_UUID to INTERDOMAIN_TOPOLOGY_NAME