Reactivated some tests that had been disabled by Liying or me and found/fixed some bugs in the process, including a problem with Splunk.Client.Response.Dispose and the  Splunk.Client.Server constructor.

Signed-off-by: David Noble <dnoble@splunk.com>
Merge branch 'dnoble/refactor' of https://github.com/splunk/splunk-sdk-csharp-pcl into dnoble/refactor