[imp] Add ACL `core.options` and take care of display the fieldset.

siehe: https://github.com/joomla/joomla-cms/commit/b001f2c9aeef4d0088c976f9d76dea7da8b820bd
Merge pull request #72 from zero-24/patch-31

[imp] Add ACL `core.options` and take care of display the fieldset.