Display mounted file system type and mounted from fields in properties dialog

Summary:
BUG: 220976
{F6211410}

Test Plan: Open properties dialog.

Reviewers: dfaure, broulik, ngraham, #frameworks, cfeck

Reviewed By: broulik, ngraham

Subscribers: ngraham, broulik, kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D15000