Omit ending 'endif;' from source code parsing when erroneously included within line number range
Add search form to search results page:

* Add search form to top of search results page
* Add breadcrumb for search results page
* Make searchform template applicable outside of reference landing page
Add search summary info at top of search results page
Add post_type search filter checkboxes to search form (all checked by default)
Bump CSS version