Update matcha-gtk-theme to 20200408
- Fixed gnome-shell 3.36 popover and dailogs issues
- Update light version sidebar style
Signed-off-by: Algent Albrahimi <email@example.com>
Test Plan: Switch system theme to all Matcha theme variants and check if they are working as expected.
Reviewers: Triage Team, DataDrake
Reviewed By: Triage Team, DataDrake
Differential Revision: https://dev.getsol.us/D8663