Ahmad Samir authored Apr 08, 2019 and Christoph Cullmann committed Apr 08, 2019

Summary:
This matches how the Filetree plugin sorts its tree view, so that
using the Next/Previous Document (from Filetree plugin) actions while
looking at the Projects panel doesn't skip/jump over files.

BUG: 403997
FIXED-IN: 19.08.0

Test Plan:
- Create a git repo that has three files with mixed case names, e.g.:
a
B
c

- Open kate and look at the filetree panel and the projects panel, how
the files are sorted should match.

Reviewers: #kate, cullmann, dhaumann

Reviewed By: #kate, cullmann

Subscribers: kwrite-devel

Tags: #kate

Differential Revision: https://phabricator.kde.org/D20319