Idle manager with separated logic

[iLLiCiTiT]

Changes

• logic of idle manager was separated to separate file
  • the logic and python module pynput is imported only when needed
• renamed file idle_manager.py to idle_module.py
• fixed multiple callbacks at the same idle time in TimersManager

[mkolar]

Timer turns off fine, but no pop up shows. I smell something fishy in here ;)

[iLLiCiTiT]

I smell something fishy in here ;)

Me either. Issue was that it didn't expect multiple callbacks at the same time which may happen only if message time is really small. Fixed...