Hints for hexchat in main

Hints

• asv-developer-name-tag-deprecated
  <code>io.github.Hexchat.appdata.xml:35</code> - <em></em><br/>The toplevel `developer_name` element is deprecated. Please use the `name` element in a `developer` block instead.
• asv-screenshot-media-url-not-secure
  <code>io.github.Hexchat.appdata.xml:155</code> - <em>http://i.imgur.com/tLMguQz.png</em><br/>Consider using a secure (HTTPS) URL to reference this screenshot image or video.
• asv-nonstandard-gnome-extension
  <code>io.github.Hexchat.appdata.xml:313</code> - <em>kudos</em><br/>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-developer-info-missing
  <code>io.github.Hexchat.appdata.xml</code> - <em></em><br/>This component contains no `developer` element with information about its author.