[AndyB] Quick search 6.3

Updated options page.

Updated Options page descriptions.

Updated template variable.

Fixed 3 keyword search when Enhanced search is enabled.

Fixed issue with Quick search box showing above widget position in Resource manager.

Now Quick search works correctly in Resource manager on all pages.

Fixed issue with close results button in Resource manager.

Fixed issue with quick search not working on forum list.

• Now honors "View threads by others" permission.

• Fixed issue with showing current thread in quick search results.