Feed back messages should be cleared when filtering the project ideas (based on the search terms).

src/main/java/se/su/dsv/scipro/supervisor/panels/SupervisorUnmatchedThesisPanel.java

@@ -378,6 +378,7 @@ public class SupervisorUnmatchedThesisPanel extends Panel {
                     allContainer.replace(new Label("totalProjectIdeas", Integer.toString(allProvider.size())));
                     target.addComponent(totalProjectIdeas);
                     target.addComponent(allContainer);
+                    target.addComponent(feedBackPanel);
                 }
             };
             add(filterButton);