DictonaryGrid should have it's own "append_column" function
It might be nice to be able to more easily add a column to a dictionary grid. Currently the following non-obvious code is required:
def add_column(self, widget, data=None):
response, val = prompts.string("New Column","Please select a name for the new column")
if response == gtk.RESPONSE_OK:
column = conventions.
This could easily be append_key(self, key) and then add the column as coded here.