Parsec improvements + multiple event handlers.
Fixed some typos.
Fixed config print for non-strings.
Fixed site config test.
Corrected an import.
Removed some unused parsec test file spec.
Removed broken get-config test (no args now prints all config).
Fixed new gcylc config spec.
Print config with correct heading levels.
Print config list items with quotes if nec.
Fix get-config test for parsec upgrade.
Corrected event handling error (from merging master?).
Added a TODO comment.
Added a test for list of event handlers.
Default to empty config dicts, not None.
Handle empty config dicts in parsec util functions.
Tidied new parsec test battery.
Added parsec tests for empty config.
Restored accidental deletion in parsec tests.
Fix single line config print + tidy some code.