26) Add Progress Bar to everything that includes delay

[RaphaelTurtlePower]

This is non-trivial, since you have to identify where the places are that requires the progress bar and ensure that the progressbar is removed on successful completion AND on failure as well.

[petervdl]

we talked about this a couple of days ago, Christian

New info: I don't think it is worth adding this for "thumbs up" voting. A quick better approach would be to mark the vote locally immediately, and never bother noting the callback from Parse. I can do that, if you agree.

I'd be glad if you would take this, Christian. I don't think there are many places where there is an observable delay.