Release v1.5.1 📦

Most important: Fix email sent issues (both during registration as well as contact form). The reason to create this patch release.

Have a nice Easter!

DB migrations	New ENV vars	Admin guide changes	Suggest cache clearing
❌	❌	❌	☑️

What's Changed

• Fix Dragonfly redis compatibility config by @melroy89 in #634
• Fix width class missing if KBIN_PAGE_WIDTH has not been set by @BentiGorlich in #636
• Fix list display in magazine description by @BentiGorlich in #635
• Translations update from Hosted Weblate by @weblate in #637
• restore css to limit figure preview size by @asdfzdfj in #638
• Hotfix: Fix email sent by @melroy89 in #645
• Update to v1.5.1 by @melroy89 in #646

Full Changelog: v1.5.0...v1.5.1