Add more characters to the troublesome character dict

cellprofiler_core/module/_module.py

@@ -545,7 +545,7 @@ def set_notes(self, notes):
         """Give the module new user-entered notes
 
         """
-        sanitization_dict = {"“":"\"","”":"\""}
+        sanitization_dict = {"“":"\"","”":"\"","—":"-","’":"'","`":"'"}
         self.__notes = [''.join(sanitization_dict.get(x,x) for x in note) for note in notes]
 
     notes = property(get_notes, set_notes)