IndexOutOfRange exception is thrown for RWS ODM data post request

[jamietao]

When sending the post request to RWS for ODM data creation, the MAuth core lib throw IndexOutOfRange exception.
Looking at the code, that is caused by the MAuthCoreExtensions does not handle this url query pattern properly.
The BuildEncodedQueryParams method requires the query parameter must follow the pattern key=value, but PostODMClinicalData is a special case, there is no '=' and value. (Url: RaveWebServices/webservice.aspx?PostODMClinicalData)

The BuildEncodedQueryParams method need to be updated to support this case.

[jamietao]

One PR was created for that: #103