Add Documents shortcut detection
Summary:
This adds support for Documents detection when included as a default
as implemented in D16852. This is a work-in-progress and currently
does not succeed.
Assistance is welcome.
Test Plan: Run ctest within the dolphin build directory.
Reviewers: Dolphin
Subscribers: elvisangelaccio, kfm-devel, ngraham
Tags: Dolphin
Differential Revision: https://phabricator.kde.org/D16967