Hints for freeciv-client-gtk3 in universe

Hints

• asv-screenshot-media-url-not-secure
  freeciv-gtk3.22.appdata.xml:19 - http://images1.wikia.nocookie.net/__cb20120308234702/freeciv/images/thumb/4/43/Hex2.3.png/1000px-Hex2.3.png
  Consider using a secure (HTTPS) URL to reference this screenshot image or video.
• asv-cid-has-number-prefix
  freeciv-gtk3.22.appdata.xml:4 - freeciv-gtk3.22.desktop: 22 → _22
  The component ID contains a segment starting with a number. Starting a segment of the reverse-DNS ID with a number is strongly discouraged, to keep interoperability with other tools such as D-Bus. Ideally, prefix these segments with an underscore.
• asv-url-not-secure
  freeciv-gtk3.22.appdata.xml:16 - http://www.freeciv.org/
  Consider using a secure (HTTPS) URL for this web link.
• asv-id-tag-has-type
  freeciv-gtk3.22.appdata.xml:4 - freeciv-gtk3.22.desktop
  The <id/> tag still contains a `type` property, probably from an old conversion to the recent metainfo format.
• asv-cid-contains-hyphen
  freeciv-gtk3.22.appdata.xml:4 - freeciv-gtk3.22.desktop
  The component ID contains a hyphen/minus. Using a hyphen is strongly discouraged, to improve interoperability with other tools such as D-Bus. A good option is to replace any hyphens with underscores (`_`).
• asv-cid-maybe-not-rdns
  freeciv-gtk3.22.appdata.xml:4 - freeciv-gtk3.22.desktop
  The component ID might not follow the reverse domain-name schema (the TLD used by it is not known to the validator).