Stylizer Features Requests.

Issue Summary

Stylizer is missing some basic css controls that limit its usefulness.

1. Stylizer allows user to choose font groups from a fixed list. It appears that the only way to change the options is to hack into the code. It would be helpful if the list were stored in a separate location/file that could be modified by the user either directly or through the UI.
2. Additional setting options to manage margins as well as border and padding are needed.
3. Control of a background image is missing

Adding these features (possibly others) to stylizer makes it an alternative to editing style sheets. As it stands, the user must still use style sheets to complete the basics.