Revert "SystemUI: allow for the clock to be centered (2 of 2)"

This reverts commit 6445c9c3ce333d6cb0e137d35b8b4adf3caff4bc.
[2/2] Settings: statusbar clock customization + color picker

- added slims clock and date customizations for status bar
- added our own modded marginov color picker which we use as default
[2/2] Settings: Network speed indicator
Fix back RU translation