Using Cravatar instead of Minotar

Minotar takes to long to load the player heads, Cravatar does the job
better.
Making the player heads a link to the profile
Add a login button to the menu when not logged in

For users that are not logged in yet there now will be a login button,
this because it was quite hard to find withouth it.
Add an brace, otherwise an parse error was thrown. Also add a separator between the login button and the rest of the menu
Merge branch 'xxroltsxx-master'