Wip/martyn/t7270 remove duplicates add dates

The metadata in each file on designs.apertis.org didn't contain a creation
date, however this is the primary means that we are ordering the documents
by on the new Apertis website so that the newer documents are listed
first.

Whilst the documents don't contain a creation date, they are stored in a
git repository that can provide us with this information. Add the
retrieved dates into the front matter.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>

Martyn Welch authored 4 years ago and Martyn Welch committed 4 years ago

We are using Hugo's "ref" shortcode for links on the website as this helps
to ensure that our links are valid. A number of links that aren't using
this tool have been identified, fix them and the resulting bad page links
found un upstreaming.md.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>

Martyn Welch authored 4 years ago and Martyn Welch committed 4 years ago

A number of documents had previously been copied over from designs.a.o.
Tweak the contribution process document to correct broken titling
(discovered during comparison) and remove duplicates.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>