Update to 0.2.6.

Add xfce to Categories, clean up depends that are pulled in by webkit already.
Add options for api and user documents.
Add a freshports entry for the search bar.
Fix the openssl detection test.

Based on PR: ports/144830 (update to 0.2.4), ports/146710 (update to 0.2.5)
Submitted by: Olivier Duchateau <duchateau.olivier@gmail.com>
Approved by: maintainer (implicit)