implemented basic commandline for #200, implented open appdata folder command

...ocker8/budgetmasterclient/ui/commandLine/CommandLine.java

...getmasterclient/ui/commandLine/CommandLineController.java

...8/budgetmasterclient/ui/commandLine/commands/Command.java

...etmasterclient/ui/commandLine/commands/CommandBundle.java

...getmasterclient/ui/commandLine/commands/CommandClear.java

...dgetmasterclient/ui/commandLine/commands/CommandHelp.java

...dgetmasterclient/ui/commandLine/commands/CommandList.java

...dgetmasterclient/ui/commandLine/commands/CommandOpen.java

...asterclient/ui/commandLine/commands/CommandShortcuts.java

...getmasterclient/ui/commandLine/commands/HistoryEntry.java

...dgetmasterclient/ui/commandLine/commands/HistoryType.java

...asterclient/ui/commandLine/commands/PossibleCommands.java

...dlocker8/budgetmasterclient/ui/controller/Controller.java

...rces/de/deadlocker8/budgetmaster/languages/_de.properties

...rces/de/deadlocker8/budgetmaster/languages/_en.properties

...adlocker8/budgetmaster/ui/commandLine/CommandLineGUI.fxml

...de/deadlocker8/budgetmaster/ui/commandLine/_en.properties

...java/de/deadlocker8/budgetmaster/logic/utils/Strings.java