query-issue656.1.adm

Initial support for true ADM output (content type application/x-adm).
Elimiate the JSON "results" wrapper from API calls. Rename
DisplayFormat -> OutputFormat, TEXT -> ADM. Cleaned up some output and
added some useful comments. Fixed a few latent bugs in testdriver string
comparison routines. Refactored HTTP error handling in TestsUtils. Had
to update many expected test results.

Change-Id: I2d7ead038512455b2ab7844021cb62222400447b
Reviewed-on: http://fulliautomatix.ics.uci.edu:8443/137
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Ian Maxon <imaxon@uci.edu>
Reviewed-by: Till Westmann <westmann@gmail.com>