Hints for gnome-usage in universe

Warnings

• asv-developer-id-missing
  org.gnome.Usage.metainfo.xml:79 -
  The `developer` element is missing an `id` property, containing a unique string ID for the developer. Consider adding a unique ID.
• asv-relation-item-redefined
  org.gnome.Usage.metainfo.xml:232 - requires & requires
  This relation item has already been defined once for this or a different relation type. Please do not redefine relations.
• asv-url-homepage-missing
  org.gnome.Usage.metainfo.xml -
  This component is missing an `url` element of type `homepage` to link to the project's homepage.