Change lifetime funding to estimate on grants detail page

[nfrgosselin]

User Story: As a grantee I want to display an estimated lifetime funding amount (instead of an "exact" number) So that contributors know how to contextualize the number

Acceptance Criteria GIVEN that I am on the grant details page WHEN I look at copy in the lifetime funding section THEN I see a revised heading that reads "Estimated lifetime funding received" AND the "raised from all contributors" is replaced by "This number should not be used for accounting purposes."

GIVEN that I am on the grant details page WHEN the grant has earned >$1,000 THEN the display reads "~$N", where N is the amount rounded to the nearest thousand (instead of an exact dollar amount)

GIVEN that I am on the grant details page WHEN the grant has earned <$1,000 THEN the page displays "Less than $1,000"

Product & Design Links: Grant detail page with Lifetime Funding Section included for reference

Tech Details:

Open Questions:

Notes/Assumptions: