Expand the 'Variables' page so that it links to the two-way variables
page from within the body of text. Having the link in only the side-bar
was too easy to miss.
Move the "Custom Job Types" expandable section to its own, normal
section.
The expandable sections in the docs aren't that clear, visually. It's
easy to miss that they can be expanded. This was the only use of this
feature.
Remove the "what is new" link, because it's not that relevant for a quick-
start page. Also it got lost a bit between the videos and felt out of
place.
This replaces the "Development" link, as "Get Involved" is also about
development already. The "Get Involved" page now links with a CTA button
to the "Development" page.
Remove the assumption that a SocketIO job update without "previous state"
set is always an indication that it's about a new job. Soon job priority
will be changeable, and then this assumption will no longer hold.
Sometimes the setup assistant doesn't work (port already in use, Blender
not installed), so having an example file will make it possible to still
start Flamenco.
The FAQ section was quite invisible, because it was sitting between the
much bigger Usage and Development sections. It's now easier to spot in the
TOC.
When a submitted job is refused because of a mismatched etag, there is
now a more explanatory error logged on the Manager. The website also has
an entry in the FAQ for this, as I expect more people to run into this
issue when they upgrade Flamenco.
The example on the project website is incorrect:
```
task_types: blender, ffmpeg, file-management, misc
```
It results in an error:
```
loading configuration: yaml: unmarshal errors:\n line 2:
cannot unmarshal ||str "blender..." into []string
```
The fix seems to be adding square brackets around the list of comma
delineated tasks:
```
task_types: [blender, ffmpeg, file-management, misc]
```
This results in output with the confirmation that
`taskType=["blender","ffmpeg","file-management","misc"]`
`make update-version` now also updates
`web/project-website/data/flamenco.yaml` so that the new version is
listed as the latest one on flamenco.blender.org.
Note that such a change will only be visible online after publishing the
site with `make project-website`. Be sure to only do this after the
build has been uploaded there, to avoid dead links.
