Clear out contact for custorder if user clicks "customer is unknown"

also show pending customer reference when viewing proper custorder

tailbone/templates/custorders/create.mako

@@ -892,6 +892,16 @@
                 this.customerPanelOpen = true
             }
         },
+        watch: {
+            contactIsKnown: function(val) {
+                // if user has already specified a proper contact, then
+                // clicks the "contact is unknown" button, then we want
+                // to *clear out* the existing contact
+                if (!val && this.contactUUID) {
+                    this.contactChanged(null)
+                }
+            },
+        },
         methods: {
 
             startOverEntirely() {