1.5.15

• added the default_page setting back to the settings
• added shopping as an option for default page
• changed the PWA's default link now respects the default page setting (default is search so nothing changes for most users)
• fixed previously delayed entries might be missing from shopping list and auto-onhand not working (thanks to @smilerz #3048)
• fixed boot.sh would not properly work on systems with IPv6 disabled
• fixed system page breaking with certain PG versions (thanks ot @richid #3027)
• fixed error by deleting the currently selected supermarket
• fixed shopping category headers would stay even if they only contained postponed entries
• reverted meal plan ical API change to have optional parameters (will be rewritten in future updates)
• updated lots of translations