Adding proposals for 2013 and earlier, via Adam Olshen.

Adam was mostly forwarding attachments from an email JB sent him when we started writing the 2013 proposal. Message read  "I attach what I have from 2008.  The date of these files on my computer is Sept 26 2008, so this was a pretty mature draft.  Not sure if more/less final than what Sunduz circulated. Also attaching an interim draft of 2006 proposal.  Latest file that I have for that year. Also attaching final .tex files from the original 2004 proposal, which I helmed."