Hints for gnome-maps in universe

Warnings

• asv-release-time-missing
  org.gnome.Maps.appdata.xml:293 - date
  The release is missing either the `date` (preferred) or the `timestamp` property.
• translations-not-found
  Unable to add languages information, even though a translation tag was present in the MetaInfo file. Please check that its value is set correctly, and all locale files are placed in the right directories (e.g. /usr/share/locale/*/LC_MESSAGES/ for Gettext .mo files).