Basic tabbed list functionality.

To Do:
Show active tab by comparing URL against this URL.
Provide menu functionality to add URL filters.
Add active tab functionality
Address Rob's review comments.
Fixes for non-tabbed lists.
Fix to strip JQuery::dump <pre> tag
codestyle
Merge branch 'add_list_tabbed_filter' of https://github.com/Sophist-UK/fabrik into Sophist-UK-add_list_tabbed_filter
refractoring tabs, differentiate between "" and "All", corrected check for values with spaces in them, altered admin page layout