Update grant tags

[nathanshammah]

This pull request is an attempt at unifying and improving the current tags used for grants, so that the search filter can be more useful on the grants page. Some decisions I took include:

• removing too generic tags, such as "quantum" and "software"
• trying to include the programming language of a software project, such as "python", if applicable
• come up with some standardization to unify tags (plural/singular), shortening them ("quantum education" --> "education") which led to some new tags emerging:
  • "follow-up grant"
  • "qiskit", "qutip", "mitiq" etc.
  • "programming language" for projects developing a new language; I wonder if "domain specific language" would be better, but thought the first option to be more intuitive
• use only lower case
• avoid acronyms; although on this I see there is a tradeoff. So I removed "QEC" and used "error correction" as much as possible

fixes #347

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Name	Status	Preview	Updated (UTC)
unitary-fund-prel	✅ Ready (Inspect)	Visit Preview	Aug 12, 2024 9:47pm

[natestemen]

Thanks Nathan! This will be great to make blog tagging more useful.

While reviewing I encountered two bugs with tagging on the website: #516 and #517. Let's leave these for separate PRs, however.

Aside from the comments left in the code, I noticed we have quarterly newsletter, quarterly update, and quarterly review. I think we can combine these into 1 or 2 tags.