Fixed issue where UI controls were not properly initialized when editing
words (specifically, on the WPSView and WordEditView pages).  For
example, when attempting to add a new word after editing an existing
word, the add/edit word page would appear to be in edit mode since the
controls were still populated with the values from the previously edited
word.  This fix also clears the entry in the search text box when the
main "Manage Words / Word Editor" page appears.  Lastly, the combo box
declarations were modified to eliminate compiler warnings.