Redone Packet2EntryEdit as Packet4Admin
Ui improvements
Minor code improvements
Merge branch 'HEAD' of https://github.com/KrasseKoder/MensaManager2013Client.git

Conflicts:
	src/main/java/com/github/krassekoder/mm13client/gui/MainWindow.java
	src/main/java/com/github/krassekoder/mm13client/gui/TellerWidget.java