Adapt MyIdentityPage to log-in style web interface:
- Re-use "wot" & "mLoggedInOwnIdentityID" member variables of parent class instead of duplicating session management code
- As a conclusion, don't have a code path for displaying the page without a selected OwnIdentity anymore - someone is always logged in!
- Remove the big synchronization block upon the WebOfTrust. This branch is also about getting rid of synchronization on the web interface for faster rendering. Notice: This does not remove all synchronization in this page, we still might use functions which synchronize.
- Instead of displaying a table with all OwnIdentity in the database, only display the logged in one.
- Recycle the code which rendered the table by removing the part which loops over all identities so it only displays the logged in identity. 
- As this recycling is ugly, JavaDoc a TODO to replace it with a proper single-identity layout. Notice: We haven't had a WOT release for a very long time, so to speed up things I am doing tradeoffs like this one.