fixes an yet unknown problem with to many connections
@JonasKJ
Merge pull request #93 from JonasKJ/master

Gravatar chat avatars
add loading-header-image

uuups
minor update

synchronizes the ammount of guests properly.
show the users gravatar in the user-overview instead of the chat.
outsourced md5-generation to the sql-server. may he do the work!
Update config.json
Merge pull request #1 from screeny05/master

test pull