Log out the user when creating / deleting an identity:
- Add the log in page to the bottom of the page which shows the "Identity created" / "Identity page" deleted message
- This improves the WebPageImpl base class: It now allows adding one page to another page
- Get rid of storing infoboxes in an array and adding them in toHTML(), instead add them immediately
- I have tested all infobox functions, they seem to work.
- Of course I've also tested the log out functionality & page adding