Add screenshots for Evince and Fonts 43

See merge request !18

Add core app screenshots for GNOME 43

See merge request !17

These are screenshots taken on GNOME OS of the latest version
of these apps.

Related to GNOME/Initiatives#34

Add Devhelp appdata files

See merge request !16

Move this theme elsewhere, let es.gnome.org use modern until someone decides to re-design it from scratch

With the demise of people.gnome.org, the screenshots for Devhelp's
appdata manifest need to find a new home.

Add GNOME 43 schedule

See merge request !15

Fix overlap of codeblock on wiki.gnome.org

See merge request !7

host videos for 42 release notes

Closes #5

See merge request !14

Fixes #5

This way, we can redirect from https://people.gnome.org/~mcatanzaro/ to
this new location without breaking old metainfo.

Add API key for the new v2.1 Resrobot transit API.
This allows old clients to continue use the v2 API
while it's still working.

The definition for this provider was missing, even
though the plugin has been available some time.

The (third party) Paris OpenTripPlanner instance
has not been kept up-to-date, so remove it for now.

kind of metadata.

This reverts commit 1826f9a5.