Release v2.4

What's Changed

• Update package.json by @rlreamy in #526
• KPMP-5402: update styling for dropdown menus by @HaneenT in #527
• Create changelog.md by @rlreamy in #528
• KPMP-5402: fix dropdown alignment by @HaneenT in #529
• KPMP-5138: add 'ALL' col to home & explorer tables by @HaneenT in #530
• KPMP-5138: fetch totals from backend by @HaneenT in #531
• KPMP-5138: update tooltip text for homepage tables by @HaneenT in #532
• Release v2.4 by @rlreamy in #533
• Update changelog.md by @rlreamy in #534
• Release v2.4 by @rlreamy in #535

Full Changelog: v2.3.1...v2.4