fix imports, optional name when downloading
not needed
fixed checkstyle warnings
fix history not showing e.g. on reload
checkstyle, javadoc
Merge branch 'master' of https://github.com/Gruppe14/KIT-PSE

Conflicts:
	app/controllers/Website.java
	app/what/web/ChartHistory.java
standardize html
Add hovertext\!
css
x and y same dimension
not changed System.out.print methods to Printer.p...
fix ugly style + exception

also removed a false comment
Merge branch 'master' of https://github.com/Gruppe14/KIT-PSE
+javadoc
small style changes
move packages
style fix
checkstyle + javadoc
javadoc
Merge branch 'master' of https://github.com/Gruppe14/KIT-PSE