Adding various MR related tasks
Resolves #8 (closed), #9 (closed), #11 (closed). Implements the following tasks:
- listing MR
- showing a single MR
- listing notes for a given MR
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Resolves #8 (closed), #9 (closed), #11 (closed). Implements the following tasks: