Hints for libreoffice-plasma in main

Hints

• asv-url-not-secure
  <code>org.libreoffice.kde.metainfo.xml:16</code> - <em>http://www.libreoffice.org/discover/writer/</em><br/>Consider using a secure (HTTPS) URL for this web link.
• asv-url-not-secure
  <code>org.libreoffice.kde.metainfo.xml:20</code> - <em>http://www.libreoffice.org/get-help/documentation/</em><br/>Consider using a secure (HTTPS) URL for this web link.
• asv-developer-name-tag-deprecated
  <code>org.libreoffice.kde.metainfo.xml:26</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>org.libreoffice.kde.metainfo.xml</code> - <em></em><br/>This component contains no `developer` element with information about its author.