ES04: make javadoc generate nicely, add better commente to ConsoleFieldScanner

# Please enter the commit message for your changes. Lines starting
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# Date:      Mon May 2 13:50:21 2022 +0200
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# On branch master
# Changes to be committed:
#	modified:   .idea/misc.xml
#	modified:   src/MusicLandscape/entities/Track.java
#	modified:   src/MusicLandscape/util/ConsoleFieldScanner.java
#	modified:   src/MusicLandscape/util/ConsoleScanable.java
#
