release 0.8.3, fix issue with Chrome

Hi all,

Of late SS had been having issues with Google Chrome -- the results
just won't appear (issues #106). I have made a small release to fix
that. However, this comes at the cost of removing the index feature
for multi-query blast searches. I apologize for the delay and for
removing a handy feature. I will try to add the index feature back as
soon as possible.


-- yeban