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Merge remote-tracking branch 'origin/master'

Conflicts:
	src/Datenbank/LeseBenutzerdaten.java
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/gui/MenuFenster.java
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/gui/MenuFenster.java
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/gui/LoginFenster.java