Plasma 5.8.9 released

This release adds a three months' worth of new translations and fixes from KDE's contributors. The bugfixes are typically small but important and include:

Make sure device paths are quoted. Commit. Fixes bug #389815
Sanitise notification HTML. Commit. Phabricator Code review D10188
Fixed a freeze caused by certain notifications. Commit. Fixes bug #381154
Fix for xembedsniproxy crash due to NULL returned from xcb_image_get(). Commit. Phabricator Code review D9732

Plasma 5.8.9 Complete Changelog
Breeze Plymouth

Fix overlapping labels on systems with different window sizes. Commit. Phabricator Code review D8721

Discover

Make sure we remove the Transaction before is destroyed. Commit.
Fix test run. Commit.

KDE GTK Config

Also list GTK 3 themes without "gtk-3.0" subfolder. Commit. Phabricator Code review D9459
Fix minimum height of cursor/icon theme comboboxes. Commit. Phabricator Code review D9457

KSysGuard

Correction with the & problem in tabs. Commit. Fixes bug #382512. Phabricator Code review D10151
Use OCS to retrieve Tabs from the KDE store. Commit. Fixes bug #338669. Phabricator Code review D8734

KWin

Remove unnecessary QString::arg call. Commit. Phabricator Code review D8764

Plasma Desktop

[kimpanel] Use automoc keyword for kimpanel-scim-panel. Commit. Phabricator Code review D9245

Plasma Workspace

[Notifications] Fix grouping. Commit. Phabricator Code review D10315
Make sure device paths are quoted. Commit. Fixes bug #389815
Add license header to test. Commit.
Sanitise notification HTML. Commit. Phabricator Code review D10188
Fixed a freeze caused by certain notifications. Commit. Fixes bug #381154
Fix for xembedsniproxy crash due to NULL returned from xcb_image_get(). Commit. Phabricator Code review D9732
Fix compilation with current cmake (git branch release). Commit.