Remove Search

I removed search and replaced it with something similar to what we had before, displaying the current user's avi and linking to their profile. (Or the default avi and to sign in if they are not logged in.) 

@georgebarnick: As you know, there are three different extensions an avi can be. So, I have to make a request to all three images, and then use the one that loads correctly (or use the default avi if none of them work). I want to run this procedure by you before merging. It could be argued to be "unclean", but it is the only way I know of to doing it without PHP. I have a temporary clone at http://seaside98.com/temp/splash/