Don't list archived Habits when creating Widgets. (#309)

Fixes #283

uhabits-android/src/main/java/org/isoron/uhabits/widgets/HabitPickerDialog.java

@@ -86,6 +86,7 @@ public class HabitPickerDialog extends Activity
 
         for (Habit h : habitList)
         {
+            if (h.isArchived()) continue;
             habitIds.add(h.getId());
             habitNames.add(h.getName());
         }