added servicesService and moved shapeshift into there

src/js/services/servicesService.js

@@ -0,0 +1,39 @@
+'use strict'
+angular.module('copayApp.services').factory('servicesService', function(configService, $log, lodash) {
+  var root = {};
+  var services = [];
+
+  root.register = function(serviceInfo) {
+    $log.info('Adding Services entry:' + serviceInfo.name);
+
+    if (!lodash.find(services, function(x) {
+      return x.name == serviceInfo.name;
+    })) {
+      services.push(serviceInfo);
+    }
+  }
+
+  root.unregister = function(serviceName) {
+
+    var newS = lodash.filter(services, function(x) {
+      return x.name != serviceName;
+    });
+
+    // Found?
+    if (newS.length == services.length) return;
+
+    $log.info('Removing Services entry:' + serviceName);
+    // This is to preserve services pointer
+    while (services.length)
+      services.pop();
+
+    while (newS.length)
+      services.push(newS.pop());
+  };
+
+  root.get = function() {
+    return services;
+  };
+
+  return root;
+});