loginpage now working correctly
overlay panes are now organized on a stack
ServerPropertyWindow is now opened as overlay and renamed to ServerPropertyPage
every overlay page opens itself as overlay in constructor
renames InstanceWindow to InstancePage and opens it as overlay
renames NewDatabase to NewDatabasePage and opens it as overlay
renames RegisterSchema to RegisterSchemaPage and opens it as overlay
InputBox is now opened as overlay
renames NewSchema to NewSchemaPage and opens it as overlay
renames NewScoville to NewScovillePage and opens it as overlay
renames YesNoDialog to YesNoPage and opens it as overlay
fixes Scoville_repo.py
built more convenient example layout via alignment