Fix wrong window titles
Summary:
BUG: 389135
FIXED-IN: 19.11.80
Currently dolphin shows a folder's name instead of a "place" name if the current path has trailing slash and place's name doesn't, or vice versa.
This patch fixes this behavior, so that dolphin always shows a "place" name.
The QUrl::FullyEncoded string conversion is required because that's how
the places model stores the places URLs in the XML bookmarks file.
Test Plan:
Test configuration: https://imgur.com/a/U4zBp8c
Before (wrong window titles are in red): https://imgur.com/a/dB4xRwo
After (all window titles are correct): https://imgur.com/a/W7virBn
Reviewers: Dolphin, elvisangelaccio
Subscribers: elvisangelaccio, ngraham, kfm-devel
Tags: Dolphin
Differential Revision: https://phabricator.kde.org/D23706