chore(common): build-utils.sh minor tweaks

Fixing up a number of minor bits and pieces identified during demo:

* invalid action or :target would not be picked up if paired with a
  valid one (e.g.: build:foo should not have worked)
* colors defined in both shellHelperFunctions and build-utils were
  problematic; able to remove them from shellHelperFunctions because
  all references included both scripts
* builder_has_action and builder_report now allow both `action:target`
  and `action :target`
* keyman-version/build.sh did not have working test action...