GitLab

Running `source ~/.zshrc` can have side effects, it's better to reload the whole 
zsh session with `exec zsh`.

* use https everywhere

* use https links on the files that are left

Also, removed some broken links and updated redirections.

Depending on when the path is declared this solution would work in any case

supresses errors from convert whilen converting, as they
are usually just warnings

allow to print an image to the stdout using convert