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>
diff --git a/asterix-app/src/test/resources/metadata/results/basic/meta04.adm b/asterix-app/src/test/resources/metadata/results/basic/meta04.adm
index 8f892be..5d46b6e 100644
--- a/asterix-app/src/test/resources/metadata/results/basic/meta04.adm
+++ b/asterix-app/src/test/resources/metadata/results/basic/meta04.adm
@@ -1 +1,2 @@
-{ "DataverseName": "testdv", "DatatypeName": "testtype", "Derived": { "Tag": "RECORD", "IsAnonymous": false, "EnumValues": null, "Record": { "IsOpen": true, "Fields": [ { "FieldName": "id", "FieldType": "int32" } ] }, "Union": null, "UnorderedList": null, "OrderedList": null }, "Timestamp": "Sat Nov 24 14:27:13 PST 2012" }
+[ { "DataverseName": "testdv", "DatatypeName": "testtype", "Derived": { "Tag": "RECORD", "IsAnonymous": false, "EnumValues": null, "Record": { "IsOpen": true, "Fields": [ { "FieldName": "id", "FieldType": "int32" } ] }, "Union": null, "UnorderedList": null, "OrderedList": null }, "Timestamp": "Sat Nov 24 14:27:13 PST 2012" }
+ ]