Trebuchet: Update default workspace

Squash of commits 9eeb786a and c1835262.
Includes:

Author: Joey <joey@lineageos.org>
Date:   Fri Nov 1 11:56:19 2019 +0100

    Update default workspace

    Change-Id: I852edb6dda3e2030f97eb244ee35c1a647366901
Signed-off-by: Joey <joey@lineageos.org>

Author: Arne Coucheron <arco68@gmail.com>
Date:   Sat Jan 11 01:57:25 2020 +0100

    Trebuchet: Replace LockClock widget with DeskClock

    Change-Id: Ic958dbabcd18ee02cbd8b7ea2513356d5a2e90de

Change-Id: I0ed2e193c8acbe52644412be82e906eab0cb5e30