Git: Remotedialog, replace QTableView with QTreeView

QTreeView is a better list view with columns than QTableView.
One special reason for this change is that QTreeView
finds a proper default row height regardless of the system
DPI.

Change-Id: I3342e2295a3782b480ea811bfe335e3a77482891
Reviewed-by: Orgad Shaneh <orgads@gmail.com>