Title Bar now shows page name - closes #167

- Note: All new page must be created as `MSPanel` and not just `JPanel`.
  In their constructor, pass the name of the page to `super()` as in:

```java
public ManageCourse() {
   super("Course Management");
   // other stuff
   initComponents();
}
```

  Everything else is taken care of automatically. MasterFrame handles
  the fetching and displaying of the page name.