Some search UI cleanup:

Some search UI cleanup:
* Remove two of three redundant instances of "Search" in the mini-form at the top of the page.
* Compact things a bit at the top -- remove the fieldset, collapse a blank line in the paging area.
* Include score info if provided (eg by Lucene)
* Format the score/size/date line similarly to LuceneSearch
** but without hardcoding the color!
* Format the list with bullets as with LuceneSearch
** but without hardcoding the padding!
** this allows us to skip deleted results without looking quite as weird
* Skip line numbers in text extracts. Nobody cares and they clutter things up! LuceneSearch dropped them long ago.
* Hardcode context extract lines to 2; old default of 5 is too many. May drop the preference.
* Use more compact file info for image results
* Hopefully fix click behavior for Ogg results
* Include text extracts along with image results, if applicable.
* There are still issues with vertical alignment of the bullet on image results. :(