Fixed the Travis CI error: "TypeError: Cannot read property 'range' o…

…f null"

It is deadly to mix "npm install" and yarn, we need to pick one or the
other and stick with it.

babel/babel-eslint#681 (comment)

src/js/actions/FacebookActions.js

@@ -156,7 +156,7 @@ export default {
     }
 
     if (this.facebookApi()) {
-      const fbApiForInvitableFriends = '/me?fields=invitable_friends.limit(1000){name,id,picture.width(' + pictureWidthVerified + ').height(' + pictureHeightVerified + ')';   // eslint-disable-line
+      const fbApiForInvitableFriends = `/me?fields=invitable_friends.limit(1000){name,id,picture.width(${pictureWidthVerified}).height(${pictureHeightVerified})`;
       this.facebookApi().api(
         fbApiForInvitableFriends,
         (response) => {
@@ -283,7 +283,7 @@ export default {
     // FB.getLoginStatus does an ajax call and when you call FB.login on it's response, the popup that would open
     // as a result of this call is blocked. A solution to this problem would be to to specify status: true in the
     // options object of FB.init and you need to be confident that login status has already loaded.
-    oAuthLog(__filename + ':  this.facebookApi().login');  // eslint-disable-line
+    oAuthLog(`${__filename} this.facebookApi().login`);
 
     if (this.facebookApi()) {
       const innerThis = this;