updated remaining variables in _bootstrap.scss to be default so they can be overridden

Further changes for Text field should be mandatory for option based questions. ...

Fix for issue #1725

The question_options field on the Customisable Phase template has the
following changes:
- the 'Text' label has the asterick for required.
- the error message for missing question option now reads
 "You must have at least one option with accompanying text."
- Corrected some Rubocop errors on the files added.

Merge pull request #2000 from DMPRoadmap/bug/fix_share_plan ...

Patch issue with share plans on development