Fix styles for DiffMonitor

Author: zalmoxisus

src/app/containers/DiffMonitor.js

@@ -0,0 +1,8 @@
+import React from 'react';
+import DiffMonitor from 'redux-devtools-diff-monitor';
+
+export default (props) => (
+  <div style={{ height: '100%', overflow: 'auto' }}>
+    <DiffMonitor {...props} />
+  </div>
+);

src/app/containers/Monitor.js

@@ -3,7 +3,7 @@ import FilterMonitor from 'redux-devtools-filter-actions';
 import LogMonitor from 'redux-devtools-log-monitor';
 import ChartMonitor from 'redux-devtools-chart-monitor';
 import SliderMonitor from 'redux-slider-monitor';
-import DiffMonitor from 'redux-devtools-diff-monitor';
+import DiffMonitor from './DiffMonitor';
 
 function getMonitor() {
   if (!location.hash) return LogMonitor;

src/browser/extension/background/openWindow.js

@@ -34,7 +34,7 @@ export default function openDevToolsWindow(position) {
     });
   }
 
-  let params = { left: 0, top: 0, width: 320, height: window.screen.availHeight };
+  let params = { left: 0, top: 0, width: 340, height: window.screen.availHeight };
   switch (position) {
     case 'devtools-right':
       params.left = window.screen.availWidth - params.width;