Account view updates (#4008)

* Fix null account render issue, add tests

* Add tests for #3999 fix (merged in #4000)

* Only include sinon-as-promised globally for mocha

* Move transactions state into tested store

* Add esjify for mocha + ejs (cherry-picked)

* Extract store state into store, test it

* Use address (as per PR comments)

* Fix failing test after master merge

js/src/3rdparty/etherscan/helpers.spec.js

@@ -0,0 +1,38 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import nock from 'nock';
+import { stringify } from 'qs';
+
+import { url } from './links';
+
+function mockget (requests, test) {
+  let scope = nock(url(test));
+
+  requests.forEach((request) => {
+    scope = scope
+      .get(`/api?${stringify(request.query)}`)
+      .reply(request.code || 200, () => {
+        return { result: request.reply };
+      });
+  });
+
+  return scope;
+}
+
+export {
+  mockget
+};