Prototype queue processing for actions.
add rq to requirements
rq test fixture
unit tests for local client actions
Reset the action queue after every test
implement and test local thread copy
Better docstrings for FolderItem/ImapUid
[SCHEMA] add inbox folder name cols to imapaccount
IMAP sync backends now save folder names when sync starts.
Update test dump for new ImapAccount columns
Less ambiguous name for test_events.py