Remove jquery-1.8.0.js

Some js tests fail because they are dependant on jquery and we removed
jquery-1.8.0.js. Adding jquery2 to application_spec.js instead.

spec/javascripts/application_spec.js

@@ -14,6 +14,7 @@
 //= require moment/min/moment.min.js
 //= require i18n
 //= require handlebars
+//= require jquery2
 
 angular.module('templates', [])
 angular.module('uiGmapgoogle-maps', []);