Browser title is incorrect

Because of the left hand navigation, the browser title is now incorrectly set to `Content` for content item or `Discussion` for discussions.

The browser title should be the following when the lhnav is used:

- Me: `Open Academic Environment - My ...`
- User: `Open Academic Environment - First name Last name - Library`
- Group: `Open Academic Environment - Group title - Library`
- Content item: `Open Academic Environment - Content title`
- Discussion: `Open Academic Environment - Discussion title`