Do BasicAuth, if provided in URL
Provide help p anel hint to this capability
Provide test case testHttpPostWithBasicAuth
Enhanced BasicAuth verification
Formatting:
 * Fix up some whitespace
 * Don't concatenate strings as input to String.format
Correctly test migration of user info from URI to header

Also, remove some unused variables.
Format and comment cleanup
Merge pull request #5 from jrep/basic_authentication

Do BasicAuth, if provided in URL