Search: Show a better message when not found

It used to show "Why don't you add a new note"

lib/screens/home_screen.dart

@@ -33,6 +33,7 @@ class HomeScreen extends StatelessWidget {
         );
         Navigator.of(context).push(route);
       },
+      emptyText: "Why not add your first\n Journal Entry?",
     );
 
     bool shouldShowBadge =
@@ -141,6 +142,7 @@ class NoteSearch extends SearchDelegate<Note> {
         );
         Navigator.of(context).push(route);
       },
+      emptyText: "No Search Results Found",
     );
     return journalList;
   }

lib/widgets/journal_list.dart

@@ -12,10 +12,12 @@ typedef void NoteSelectedFunction(int noteIndex);
 class JournalList extends StatelessWidget {
   final NoteSelectedFunction noteSelectedFunction;
   final List<Note> notes;
+  final String emptyText;
 
   JournalList({
     @required this.notes,
     @required this.noteSelectedFunction,
+    @required this.emptyText,
   });
 
   @override
@@ -23,7 +25,7 @@ class JournalList extends StatelessWidget {
     if (notes.isEmpty) {
       return Center(
         child: Text(
-          "Why not add your first\n Journal Entry?",
+          emptyText,
           textAlign: TextAlign.center,
           style: TextStyle(
             fontSize: 28.0,