Debug and fix various glitches in the way screen locker works #82
Description
Fix the followigs glitches in the screen blocker:
- Clock is loading with a long delay especially after returning from suspend state.
- Many times after suspension the screen blocker locks the screen with a delay which makes the desktop revealed to the user for sone secs.
Perhaps both issues are related with the python package deps getting long delay to load, preloading might be a solution.