Settings: Soft links need trailing backslash.
Logger: Pass the logging level to setup.
Notify: Bug fix for wrong method name.

process_IN_MODIFIED => process_IN_MODIFY
Notify: Stop StartupChecker thread on exit.
Debug: Dump stack for running threads on SIGUSR1.
PhotoManager: Reset cycle timer before actions.

By telling the timer to reset before performing any functions, it stops
the timer firing while a function is in progress. The reset also happens
in the rotate and rate methods now.