Insert a search form widget that allows visitors to add category filters to the search query.
Option added to display search result posts in random order.
Option added to hide mode connector (and, or). Id added to search label for styling.
Added classes to category labels.
Fixed bug for themes not containing search.php template file.
Added the feature that when searching for empty string (just to filter by categories) it will use the search template. Some bug fixes.
The widget has been modified so you can choose the search login between categories. Now you can choose to search posts that belongs to every category select or posts that belongs to one of the selected categories at least.
Modified to search by default in top parent categories.