Corrected a word counting unsightliness (#80)

Now if a text has a word count of 0, it won't be added to the language-specific word counts

This corrects the problem that if no texts pass for a certain language the language would show up with a 0 for words

HookTest/test.py

@@ -535,7 +535,8 @@ def end(self):
                             for x in unit.additional['citations']:
                                 total_units += x[1]
                             total_words += unit.additional['words']
-                            language_words[unit.additional['language']] += unit.additional['words']
+                            if unit.additional['words'] > 0:
+                                language_words[unit.additional['language']] += unit.additional['words']
                 else:
                     display_table = PT(["Identifier", "Nodes", "Failed Tests"])
                     display_table.align['Identifier', 'Nodes', "Failed Tests"] = "c"