Add pane resizing

Refactor styles
Update autoExpand with filtered result count
Add redux batch reducer

app/index.html

@@ -58,6 +58,57 @@
             0%   {opacity: 1;}
             100% {opacity: 0;}
           }
+
+          .Resizer {
+              background: #eee;
+              opacity: .2;
+              z-index: 1;
+              -moz-box-sizing: border-box;
+              -webkit-box-sizing: border-box;
+              box-sizing: border-box;
+              -moz-background-clip: padding;
+              -webkit-background-clip: padding;
+              background-clip: padding-box;
+          }
+
+          .Resizer:hover {
+              -webkit-transition: all 0.3s ease-out;
+              transition: all 0.3s ease-out;
+          }
+
+          .Resizer.horizontal {
+              height: 11px;
+              margin: -5px 0;
+              border-top: 5px solid rgba(255, 255, 255, 0);
+              border-bottom: 5px solid rgba(255, 255, 255, 0);
+              cursor: row-resize;
+              width: 100%;
+          }
+
+          .Resizer.horizontal:hover {
+              border-top: 5px solid rgba(0, 0, 0, 0.5);
+              border-bottom: 5px solid rgba(0, 0, 0, 0.5);
+          }
+
+          .Resizer.vertical {
+              width: 11px;
+              margin: 0 -5px;
+              border-left: 5px solid rgba(255, 255, 255, 0);
+              border-right: 5px solid rgba(255, 255, 255, 0);
+              cursor: col-resize;
+          }
+
+          .Resizer.vertical:hover {
+              border-left: 5px solid rgba(255, 255, 255, 0.5);
+              border-right: 5px solid rgba(255, 255, 255, 0.5);
+          }
+          .Resizer.disabled {
+            cursor: not-allowed;
+          }
+          .Resizer.disabled:hover {
+            border-color: transparent;
+          }
+
         </style>
         <script src="http://localhost:35729/livereload.js"></script>
     </head>