Hints for stardict-gtk in main

Hints

• asv-description-first-para-too-short
  <code>stardict.appdata.xml:34</code> - <em>StarDict is a Cross-Platform and international dictionary written in Gtk.</em><br/>The first `description/p` paragraph of this component might be too short (&lt; 80 characters). Please consider starting with a longer paragraph to improve how the description looks like in software centers and to provide more detailed information on this component immediately in the first paragraph.
• asv-screenshot-media-url-not-secure
  <code>stardict.appdata.xml:41</code> - <em>http://stardict-4.sourceforge.net/images/main.png</em><br/>Consider using a secure (HTTPS) URL to reference this screenshot image or video.
• asv-url-not-secure
  <code>stardict.appdata.xml:45</code> - <em>http://stardict-4.sourceforge.net/</em><br/>Consider using a secure (HTTPS) URL for this web link.
• asv-developer-name-tag-deprecated
  <code>stardict.appdata.xml:46</code> - <em></em><br/>The toplevel `developer_name` element is deprecated. Please use the `name` element in a `developer` block instead.
• asv-url-not-secure
  <code>stardict.appdata.xml:48</code> - <em>http://www.huzheng.org/donate.php</em><br/>Consider using a secure (HTTPS) URL for this web link.
• asv-developer-name-tag-deprecated
  <code>stardict.appdata.xml:52</code> - <em></em><br/>The toplevel `developer_name` element is deprecated. Please use the `name` element in a `developer` block instead.
• asv-developer-info-missing
  <code>stardict.appdata.xml</code> - <em></em><br/>This component contains no `developer` element with information about its author.