Adds "sell" component

Uses rootscope to announce when a currency + exchange is selected to allow all components to adapt to new data.

web/app/components/helpers/stringUtils.js

@@ -0,0 +1,25 @@
+angular.module('myApp.stringUtils', [])
+  .filter('removeSpaces', [function () {
+    return function (string) {
+      if (!angular.isString(string)) {
+        return string;
+      }
+      return string.replace(/[\s]/g, '');
+    };
+  }]);
+/*
+ angular.module('myApp.currenctExchangeFactory', []).factory('currentExchangeCurrency', function() {
+  var currentExchangeAndCurrency = {};
+  var exchangeService = {};
+
+    exchangeService.get = function() {
+      return currentExchangeAndCurrency;
+    };
+    exchangeService.update = function(exchange, currency) {
+      currentExchangeAndCurrency.Exchange = exchange;
+      currentExchangeAndCurrency.Currency = currency;
+    };
+
+    return exchangeService;
+});
+*/