fixes #1100 Increasing the upload size to kudu

Notes:
-> requestLimits.maxAllowedContentLength is uint (Windows DWORD), in bytes.[MSDN](http://msdn.microsoft.com/en-us/library/ms689462(v=vs.90).aspx)
-> httpRuntime.maxRequestLength is System.Int32, in KB. [MSDN](http://msdn.microsoft.com/en-us/library/e1f13641(v=vs.85).aspx)