Merge pull request #2244 from basecamp/expose-card-ids-on-comments

Expose the card ID and URL on comments

Merge pull request #2211 from basecamp/card-nav-hotkeys

Add hotkeys for triaging cards in columns

Merge pull request #2235 from basecamp/linux-friendly-font-stack

Add `Adwaita Sans` to font stack

Merge pull request #2239 from basecamp/lexxy-comment-cleanup

Target comment elements more precisely

Require authorization for direct uploads

Respond with 403 to JSON requests that are unauthorized, instead of
redirecting.

Merge pull request #2214 from basecamp/billing-decimals

Ensure 2 decimal precision when dealing with currency decimals

Merge pull request #2242 from basecamp/restore-upgrade-button

Restore upgrade button

Merge pull request #2213 from basecamp/welcome-letter

Stub welcome letter for newly created accounts

Merge pull request #2228 from basecamp/fix-html-injection-in-webhook-…

…event-descriptions-through-card-titles

Fix HTML injection in webhooks through card titles

Merge pull request #2233 from basecamp/assignee-spacing

Replace span with li