Fixes CONTRIB-4601

https://tracker.moodle.org/browse/CONTRIB-4601

Adjusted the 'width' of form-item to make the settings/values not overlap

I don't think this breaks anything else; I did a spot check, but not being overly familiar
with the theme, will let the theme creator decide.
Merge pull request #67 from martygilbert/CONTRIB-4601

Fixes CONTRIB-4601