Adds create blob and delete blob operations for blobstore API: * Functionality is added only for Amazon driver (ie S3) for now - Rackspace, Azure to follow. * Currently, 'POST'ing a blob is done with a simple html form to deltacloud server, i.e. not streamed (though it IS streamed from Deltacloud ==> to S3). We still need to work out how we will do the streaming without creating the temporary file on the deltacloud server. * Adds appropriate haml for creating blob over html form * Uses the sinatra :method_override hack for Delete operation over HTML form (using post).
marios
