Fix: github-publish skipped leading-.dot-files in the copy-phase

Without this patch (or an alternative solution like the one suggested in the patch's code-comments) the github-publishing skips any files having a leading dot. This makes it impossible to publish the documentation of `.files` (like `.htaccess`) or the previously introduced `codeOnly`-change which added `.groc.json` to the documentation.

:sunglasses: 
Cheers,
Stephan