Hints for gimp in main

Hints

• asv-developer-name-tag-deprecated
  org.gimp.GIMP.appdata.xml:14 -
  The toplevel `developer_name` element is deprecated. Please use the `name` element in a `developer` block instead.
• asv-nonstandard-gnome-extension
  org.gimp.GIMP.appdata.xml:399 - kudos
  This tag is a GNOME-specific extension to AppStream and not part of the official specification. Do not expect it to work in all implementations and in all software centers.
• asv-screenshot-caption-too-long
  org.gimp.GIMP.appdata.xml - Scene 4 cut 15 of "ZeMarmot" being edited in GIMP. Illustration by Aryeom (CC by-sa 4.0 International)
  The screenshot caption is too long (should be <= 100 characters)
• asv-developer-info-missing
  org.gimp.GIMP.appdata.xml -
  This component contains no `developer` element with information about its author.