Make it possible to disable monitor-directories.sh script via ENV variable

[vedmaka]

The current situation

CanastaBase/_sources/scripts/maintenance-scripts/monitor-directories.sh

Line 1 in 0de73bb

#!/usr/bin/env bash

The script that monitors directories and creates/updates the symlinks is enabled unconditionally

The proposed result

Introduce an ENV variable that would allow for disabling directories monitoring

Rationale

• The feature is not required on many automated environments that miss the end user who may benefit from automatic symlinks
• The use of inotifywait may cause issues in some environments (i.e. overflow the max_user_watches on a node)