Added the edit_item method to the addCongregationWindow class to handle editing congregation information.
Moved edit_item() under the correct class.
Added get_item_info method to retrieve rows for congregation.
changed the code so it will return all the rows in the database (congregations)
Started implementing the Edit button in CongregationWindow.

Need to fix a bug where set.Text() can't handle int.
Added docstring  to edit_item and changed var name.

congregation_list --> all_congregations
Many edits. mainly started working on the edit_congregation method.

A lot of things changed. Look at the diff.
added edit_congregation().

Also have a few other edit. Check diff.
Rename: edit_data --> edit_item and set the arguments for it.
Added documentation for columns
Added to the docline
Removed 'OK'
Renamed get_item_info to get_entries.

Renamed the method so that it will be shorter.
Got rid of space (minor edit)
Edited the names of two functions.

edit_item --> edit_congregation_window
edit_congregation --> load_congregation_data
Added ability for Congregation window to modify entries that appear on the list of congregations.
Merge pull request #51 from TheoDevelopers/edit-congregation

Edit congregation feature