Rename GuestDatabaseManager to GuestDatabaseConnector
Add database connector and listview

Add the database connector for getting all inserted guests from the database and show it in an listview.
Initial commit

Add class for own Adapter. This is for showing custom lines
in an listView
Fix some errors
Remove the getGuest method

This method is unused by now
Initial commit

Add Layout for custom row
Add ListView
Rename Manager with connector