#78 - proper page titles and favicon

[krzysztofrewak]

From now on:

• every page is titled with teacher's name and university name
• name is cached and can be flushed with php artisan cache:title:flush if needed
• university logo favicon is displayed

Also:

• I fixed some problems with PSR-4 namespaces for some tests classes
• uploaded wider CWUP logo instead using one from the conference site

This should close #78.