Added ability to open all links in new windows, fixed update+add ajax status, miscellaneous fixes and cleanup.

The new pref 'item_target' controls the target of item title links.

The new plugin 'item_targets' controls the target of links within item contents.

When adding or updating feeds, fof.js now puts the action results next to the correct items, rather than all higglety-pigglety in a pile at the bottom.

Fixed prefs.php to escape values in form, cleaned up some html.

Fixed adv_autotag prefs html.