This revision enables editing the room name in the room settings page, relevant tests are also added.

Type: add

• Verify unit tests pass.
• Open a room settings page and click the edit name button, check that the editing bar is displayed correctly.
• Type the new room name and click the save name button in the editing bar, wait for completion and check it.
• Click the discard name button in the editing bar, check that the original room name is displayed correctly.