connect user to site and log in

+ A temporary login button is added to (addConnectionView) to test
connection
+ Clicking the login button, the app does the following:
-- check if the url is valid, if it is, connect to site
-- check for user authentication (now using the http response, not
cookies), if not valid, show alert box
-- if user is logged in, get json code for application and store info
in array
+ clicking save button, if required information are not provided, show
alert box