Implement capabilities client using siesta client

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Implement capabilities rest resources using siesta

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Fix capabilities ConjunctionValidator to return all ANDed validation results not only the first one

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Handle Siesta ErrorXO/ValidationErrorXO in sonatypeSumbit action

The fix will mark validation errors from server as in case of restlet1x errors

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Merge remote-tracking branch 'origin/master' into replace-restlet1x-with-siesta-in-capabilities