Adjust profile image URLs on Fb and Twitter strategies

For Fb, use the Graph API. For twitter, use the 'bigger' profile image. Larger profile images (like the one provided by Google) could provide more flexibility.

Author: igorauad

modules/users/server/config/strategies/facebook.js

@@ -29,7 +29,7 @@ module.exports = function(config) {
 				lastName: profile.name.familyName,
 				displayName: profile.displayName,
 				email: profile.emails[0].value,
-				profileImageURL: (profile.photos && profile.photos.length) ? profile.photos[0].value : undefined,
+				profileImageURL: (profile.id) ? '//graph.facebook.com/' + profile.id + '/picture?type=large' : undefined,
 				provider: 'facebook',
 				providerIdentifierField: 'id',
 				providerData: providerData

modules/users/server/config/strategies/twitter.js

@@ -26,7 +26,7 @@ module.exports = function(config) {
 			var providerUserProfile = {
 				displayName: profile.displayName,
 				username: profile.username,
-				profileImageURL: (profile.photos && profile.photos.length) ? profile.photos[0].value : undefined,
+				profileImageURL: profile.photos[0].value.replace('normal', 'bigger'),
 				provider: 'twitter',
 				providerIdentifierField: 'id_str',
 				providerData: providerData