KAT-49: Changed button's label and ordered the buttons in lock_screen.dart

rescueapp/lib/start_triage_system/lock_screen.dart

@@ -90,34 +90,34 @@ class _LockScreenState extends State<LockScreen> {
               height: 80,
             ),
             SizedBox(
-                width: 200,
+                width: 300,
                 height: 50,
                 child: Container(
                     child: RaisedButton(
-                        child: new Text('Zweite Sichtung',
+                        child: new Text('Eingabe rückgängig machen',
                             style: TextStyle(
                                 fontSize: 20,
                                 fontWeight: FontWeight.w600,
                                 color: Colors.white)),
-                        color: Colors.grey,
-                        onPressed: null))),
+                        color: Colors.blue[900],
+                        onPressed: () {
+                          Navigator.pop(context);
+                        }))),
             SizedBox(
               height: 20,
             ),
             SizedBox(
-                width: 200,
+                width: 300,
                 height: 50,
                 child: Container(
                     child: RaisedButton(
-                        child: new Text('Zurück',
+                        child: new Text('Zweite Sichtung',
                             style: TextStyle(
                                 fontSize: 20,
                                 fontWeight: FontWeight.w600,
                                 color: Colors.white)),
-                        color: Colors.blue[900],
-                        onPressed: () {
-                          Navigator.pop(context);
-                        }))),
+                        color: Colors.grey,
+                        onPressed: null))),
           ],
         ),
       ),