Revise layout.html for docs projects for Viz, Framework and Datasets

[stichbury]

This issue forms part of the ongoing work to enable a documentation subproject for Kedro-Viz. See #1524 for more details (and the kedro-org/kedro#2600).

@tynandebold Please could someone with front-end skills make some changes to the layout.html files that we'll be using for docs subprojects? They need to be adjusted to align with design feedback from @stephkaiser which is recorded in #1592 as follows:

For Viz

You can commit to my PR: #1617

Docs are currently building to look like this:

You can find the docs built here

Changes needed

• Revise top left to have the diamond + kedro logotype
• Remove version (latest/stable) that follows the logo/type at the top left hand corner

This is a mock design:

---

For Framework

Also needs someone with front-end skills please.

You can commit to my PR: kedro-org/kedro#3206

Docs are currently building to look like this:

You can find a preview of the docs here

Changes needed

• No need to change the logo/type as this is fine for the framework (it's what we need for Viz too, see above)
• Remove version (latest/stable or build preview number) that follows the logo/type at the top left hand corner

For Datasets

Also needs someone with front-end skills please.

You can commit to my PR: kedro-org/kedro-plugins#400

Docs are currently building to look like this:

You can find a preview of the docs here

Changes needed

• General sort-out of the presentation as it's a bit of a jumble right now
• Change the logo/type to match Viz and Framework as above
• Remove version (latest/stable or build preview number) that follows the logo/type at the top left hand corner (if it's displayed, I cannot completely see it).

Context

Implements design feedback from #1592

Checklist

• Include labels so that we can categorise your feature request

[tynandebold]

I'm closing this as completed. I've added the full logo treatment to all three docs projects, removed the version label, and updated the logo size in the shared CSS file.