Allow setting of minBlock on sending (#3921)

* minBlock value formatting

* Allow Contract execute to specify minBock

* Transfer allows minBlock

* Cleanups

* Check errors, verify via testing

* Display Submitted/Submission block in MethodDecoding

js/src/api/format/output.js

@@ -205,6 +205,10 @@ export function outTransaction (tx) {
           tx[key] = outNumber(tx[key]);
           break;
 
+        case 'minBlock':
+          tx[key] = tx[key] ? outNumber(tx[key]) : null;
+          break;
+
         case 'creates':
         case 'from':
         case 'to':