Clean up logging and fix error handling

lib/ErrorMessage.js

@@ -15,17 +15,21 @@ class ErrorMessage {
             return [];
         }
     }
+    get status() {
+        return this.error.status;
+    }
     hasErrorWithCode(code) {
         return this.githubErrors.some((err) => err.code == code);
     }
     toString() {
         const message = this.error.message;
         const errors = this.githubErrors;
+        const status = this.status;
         if (errors.length > 0) {
-            return `${message}\nErrors:\n${this.errorBulletedList(errors)}`;
+            return `Error ${status}: ${message}\nErrors:\n${this.errorBulletedList(errors)}`;
         }
         else {
-            return message;
+            return `Error ${status}: ${message}`;
         }
     }
     errorBulletedList(errors) {