Reworked the logging System and changed it to it
Deleted Deprecated Class Log. Switched all remaining calls to the new
Logging System. Added a try catch in Main to have a last exception
handling call
Implemented Comparable in LogLevel and set stubs in Main for LogLevel
choise at start
changed position of comment
Cleaned the Documentation of the de.persistence package
Cleaned the documentation of the de.data package
Cleaned documentation of package de.logger