Disabling backlog transfers not working when move_it.py reloads config

[pnuu]

By default at startup move_it.py runs touch for each file in the input directory to trigger their transfer. This can be disabled with --disable-backlog command-line argument. Currently this switch is not working when move_it.py notices that its config file is modified, and it reloads the config and runs touch. The --disable-backlog should prevent also this.