Hints for rkward in main

Hints

• asv-screenshot-caption-too-long
  org.kde.rkward.appdata.xml - Application main window, with object browser, data editor, file browser, and interactive R console visible. Window placement can be re-arranged and all windows can also detached from the main window.
  The screenshot caption is too long (should be <= 100 characters)
• asv-content-rating-missing
  org.kde.rkward.appdata.xml -
  This component has no `content_rating` tag to provide age rating information. You can generate the tag data online by answering a few questions at https://hughsie.github.io/oars/
• asv-developer-info-missing
  org.kde.rkward.appdata.xml -
  This component contains no `developer` element with information about its author.