* Removed some unused variables
* Fixed search form to use MediaWiki's built-in Special:Search instead of wikiHow's custom Lucene-based LSearch
* Added id="searchInput" to the search field so that search suggestions work

Change-Id: I39e9b84e0950a69f4c7f57308d6b71a2138cb097
s/NS_IMAGE/NS_FILE/g

Change-Id: Ic7954848b32ae8f65ba3c5530a0e1fe6a92755d8