Code and pre fonts/spacing.

- Restore the usage of the previous sans-serif monospace font as the
  primary one.
- Contract the line-height to not make this appearing sparse.
Only enable if there is local javascript.
Basic styles for z3c form errors.
Form styles

- Plone Javascript calendar select boxes
- Also the other form labels shouldn't look like bootstrap badges.
Search result filter look and feel

- Along with the labels not using the right cursor.
Prettifier a bit of things.
Don't auto-enable theme

- We really don't want to mangle all existing test cases because this
  seem to be able to override _everything_.