Add a property for the text field of the search bar.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Make it possible to add tags via the completion bar.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Refactor out search string methods into a category.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>