Remove executable permissions from evaluateCustomBlock.png

Continuing the discussion from

There's no reason for for it to be executable, remove executable permissions with chmod -x evaluateCustomBlock.png.
@jens @bromagosa

I've got to ask-what are the real world issues that this would/will cause.?

Maybe someone exploits a github vulnerability, uploads malware, and when someone downloads the repo with git clone they may accidentally execute that file ...?

Maybe (and I don't know how github file permissions work so this may not be possible) clone the repo, create a new branch (always better to create a new branch for bug-fixes), fix the permissions on the file re-upload to github and then do a pull request?

No.There is a chance fof it to look like a command.