* Rename shortcode hidingemail.html to contact.html
* Change content/ pages to new contact shortcodes

Found a interessting solution: https://stackoverflow.com/questions/483212/effective-method-to-hide-email-from-spam-bots#10300743

* Templating title meta tag
* Add hugo shortcodes for googleplay and fdroid
* Fix a feed valitation error: Author is missing

* Add redirects for the old .html urls
* Fix meta title on 2018-05-usability-consultant.md