JOE should start when the SCHEDULER_DATA environment variable has more than 69 characters

Current Situation
JOE uses the value of the SCHEDULER_HOME variable to store preferences for each installed JobScheduler instance seperate in the pref store. The string properties/ will be addes to the key. As the maximum value for the length of the key in the pref store is 80 when running on linux, JOE will not start when SCHEDULER_HOME has a value longer then 69.

Desired Behaviour
JOE should start even when the value for SCHEDULER_HOME is longer then 69. To seperate the preferences for different instances on the same machine the JobScheduler ID and the JobScheduler port should be used. If this is longer then 69, only the port should be used. If no environment variables for JobScheduler ID and port are set in jobeditor_environment_variables.cmd|sh the value of SCHEDULER_HOME will be taken from the last slash to the end.