feat: new sponsorship level

[erral]

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As per the new sponsorship program, I need a new level to be added to the sponsor content-type.

[stevepiercy]

I thought we decided to remove university, and move it over to community recognition, since most universities can't make donations?

From a marketing and sales perspective, "basic" and "standard" are kind of boring. With a new Sponsorship program, it might be time for a complete change in marketing strategy. It would be interesting to change to all the values to the precious metals of bronze, silver, gold, and platinum. Everybody gets a participation medal and they're all precious, instead of boring standard or basic.

One other thing, too. Consider the word "Sponsor" implies giving money in exchange for goods or services, which has tax implications. In the US, most nonprofits have shifted toward the term "Supporter" or "Donor", which removes that implication. Supporter also sounds nicer. Compare "I'm supporting the Plone Foundation" to "I'm sponsoring the Plone Foundation".

[erral]

@stevepiercy let's leave university there, not to break existing content that may have university selected as a sponsorship level.

We have a Platinum sponsor now, so we need to have this in production ASAP.

[stevepiercy]

Agreed. LFG! Thank you!