Fixed observer missing parameter

[gevorgmansuryan]

No description provided.

[yurabakhtin]

@gevorgmansuryan I think you should run grunt build for the Mail module to update the file resources/js/humhub.mail.messenger.bundle.js, becuase I see the file was updated in your previous PR.

Can we use a code observer.observe(this, instead of adding the element as param here function (index, element) {?

[gevorgmansuryan]

@yurabakhtin updated pr.
yes we can use this, but with key value code is more readable in my opinion, this the essentially same thing as element in context of jquery each. is there any reason that you want to use this ?

[yurabakhtin]

@gevorgmansuryan It is not important to use the this there, I just thought it takes less code chars :) and I see this way is used more often, but ok let keep as you wrote, thanks.