Add layouts/docs/glossary en i18n strings
Add layouts/docs/glossary es i18n strings
Use i18n strings in layouts/docs/glossary
Add layouts/blog/pager en i18n strings
Add layouts/blog/pager es i18n strings
Use i18n strings in layouts/blog/pager
Add layouts/blog/list en i18n strings
Add layouts/blog/list es i18n strings
Use i18n strings in layouts/case-studies/list
Add layouts/docs/search en i18n strings
Add layouts/docs/search es i18n strings
Use i18n strings in layouts/docs/search
Add layouts/partials/feedback en i18n strings
Add layouts/partials/feedback es i18n strings
Use i18n strings in layouts/partials/feedback
Set html lang using "{{ .Language }}"
This commit adds two backwards compatible changes to prepare for the next Hugo version, most notable:
* All the `File` methods on `Page` has been deprecated and will give a warning in the next Hugo version. Adjust this by changing `.Dir` to ´.File.Dir` and similar.
* Version the capture shortcode to use the old behaviour for markdown rendering of shortcode inner content.