Changes you might want.

I am using your code and had to make some changes. Please feel free to pull back into yours, if you want. Also, feel free to ask any questions, or suggest further changes. It's got the "works for me"(TM) badge.

* Make work with Azure Storage 2.0.
* Blob name now also error id.
* Blob list pre-sorted, with newest first.
* GetError can now call for direct blob, instead of first getting list.
* No additional call needed, in loop of list, as casting blob as appropriate type.
* Substantial decrease in Azure transactions, due to more targeted calls.
* Blob container no longer public, by default (this security hole allowed anonymous browsing of error information).