[dep] Installed angular strap for managing boostrap js
[new] Design improvements
Modified angular petition [urlpetition] directive witha new template
[new] Url petition controller and service created for retrieving url petiion resources
[ref] A few changes in the url petition html
[new] requesting resources to the backend
[new] Added a url petiion main manager controller to handle general operations
[new] Simple example to test GET and POST with the nodejs server
[new] Get and Post petition from each url resource are calling the node.js backend as expected