Perf Improvements For Azure Storage

Big improvement in perf.  migrated to page blobs rather than block
blobs.  this forces some management complexities out to us but minimizes
web api calls and allow for better blob management.

removed the transaction code.  just need to put it back in but want to
see if we can use sequenceid instead to manage concurrency issues that
may arise

There is a huge perf improvement between azure and home environments.
on azure we now run iteration stream build ups in between 600 to 700 ms.
there may be some more room for perf improvements, but i don't believe
there will be a tremendous amount.