#21 Editing and deleting

[rustylaurels]

1. Add instructions at the top of each tab saying "To edit an entry, click the row." And remove the Edit button.
2. Add a warning before a person edits a record that is being used in another table (either present all the time in the edit pane, or one that pops up)
3. Possibly remove the delete button from the rows; instead have it come up above the table once a person clicks on the row. The buttons would be in a row: Save - Cancel - Delete
4. Only allow a person to delete an entry if it's not being used in another table. Provide instructions for this situation: "This entry is currently being used in the Finished Rounds table. Before you can delete this entry, go to the Finished Rounds table and re-assign the round that is using this entry to the correct entry. Once this is done, you can delete this entry."

[Trebby]

1. We should also unselect any selected rows when the "add new" button is pressed.

[Trebby]

3 and #5 are done in rev: 46