Morpho

The current morpho metadata editor has buttons labeled "Revert" and "Finish".
These should be relabled to more familiar phrases "Cancel" and "OK" as used in
the rest of morpho for dialogs. When the user presses cancel, no changes should
be made to the metadata regardless of what the user has done in the window. If
the user presses "OK", the changes the user has made should be made in a
temporary metadata file, but the revision number of the package should NOT be
incremented until the user hits "File|Save...". Up until that point, the user
should be able to discard all changes to the package by closing the package
without saving (ie, changes to the package must require an explicit
"File|Save..." before they are permenant).