[$40] Update to Rainbow logo for month of June

[Oanh-and-only-Oanh]

Change Topcoder logo to rainbow for June 1st on discussion.topcoder.com

[jmgasper]

Challenge https://www.topcoder.com/challenges/5a16dd57-7b00-47ca-8b7d-abda7ac3aac9 has been created for this ticket.

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[jmgasper]

Challenge https://www.topcoder.com/challenges/5a16dd57-7b00-47ca-8b7d-abda7ac3aac9 has been assigned to obog.

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[atelomycterus]

@jmgasper Where can I download the logo to update? Thanks!

[Oanh-and-only-Oanh]

@atelomycterus I'm not able to add it to this ticket for some reason but I DM'ed you on slack with the file

[atelomycterus]

@Oanh-and-only-Oanh Thanks!

[atelomycterus]

@jmgasper Please apply PRs:
topcoder-platform/forums-theme#57
#624

In config, a default Topcoder logo path:

$Configuration['Garden']['Logo']='/themes/topcoder/design/images/topcoder-logo.svg';

After deploying PRs, you can update a logo in Settings without re-deploying. Need to set a new logo path.

The new logo should be displayed:

Thanks!

[sdgun]

Verified in Dev, the new rainbow logo is displayed now.