[LDN-2019] Change SheffieldDevops logo

[chriscoffee]

Change to static elements of theme as SheffieldDevops logo has changed

Original PR was #7238 which was closed due to not being from an organizer and using correct guidelines

Co-authored-by: Oliver Leaver-Smith oliver@leaversmith.com
Co-authored-by: Chris Mills <me@christophermills.co.uk

[mattstratton]

If this logo has been used in the past, the old sponsor needs to be renamed and a new sponsor created. We do not allow retroactive changes.

More details here:

https://github.com/devopsdays/devopsdays-web/blob/master/utilities/README.md

[heyitsols]

Makes sense @mattstratton. @chriscoffee want me to do the work on another PR you can pull in?

[chriscoffee]

It's cool @muggahtee, 62b2ef2 should hopefully be correct implementation if the maintainers want to have another peek 👍

Sorry it took me like ~40 minutes, I got dragged into 🔥 🚒

[chriscoffee]

Right so after chatting to @MikeRosTX in Slack I didn't read the documentation as throughly as I should have... (we used another term for this 😄)

I'll get this sorted now but for those who weren't privee and want to learn from my mistake, don't just skim https://github.com/devopsdays/devopsdays-web/blob/master/utilities/README.md#updating-a-sponsor and actually click the links and stuff and read #503 😆

[heyitsols]

Ah so old events need to have the renamed sponsor applied to them?

[chriscoffee]

I've rebased to hide my shame

 $ grep -r sheffield-devops data/events/*
data/events/2018-london.yml:  - id: sheffield-devops-before-20180519
data/events/2019-london.yml:  - id: sheffield-devops

Edit: Also props for making me check with grep, I stupidly put 2018.

[heyitsols]

I can see the change live, thanks so much 🙌