TestPostBlob now passes thanks to numerous bug fixes and some cleanup

TestPostBlob() cleaner out put
Skip tests using  t.SkipNow() instead of DontTest
Removed some unreachable code
Fixed the index out of bounds bug in get’s list processing
Replased some type assertions form hid to hkid with the safer call to Bytes()
Fixed bug in list_helper that sometimes assigned the type list to blobs