Don't have img_search call save_edits() when the filter name changes
Don't have img_search call save_edits() when the filter name changes

No longer save edits after every change to the filter name.  Saving
doesn't accomplish anything, since the filter-runner doesn't return
any results until the edit window is closed, but it does cause ImageJFind
and MATLABFind to re-tar the source folder on every keystroke.

cmusatyalab/diamond-core-filters,cmusatyalab/diamond-core-filters,cmusatyalab/diamond-core-filters