* [e2e][couchdb] Add test for mct5616
- Add test to verify that modifying object properties generates a single persistence operation with CouchDB
* [e2e] Poll for 1 sec to allow time for request
* [e2e] ignore expected console error
* add comments
* add `aria-label`s to form select fields
* add `aria-label` for clock format select
* [e2e] Improve selector
* make property name less ambiguous
* refactor(e2e): use default object name