Summary:
Bug Description: DND from mtp:// mounted folders do not work. DND of local files works, though.
Patched src/foldermodel.cpp by hand. Had a nice cpp exercise. XD
Test Plan: Test if DND from mtp:// mounted folders works or not.
Reviewers: tsimonq2, wxl
Reviewed By: tsimonq2, wxl
Subscribers: kc2bez
Maniphest Tasks: T99
Differential Revision: https://phab.lubuntu.me/D32
3663fb0ed1