Hints for lifeograph in main

Hints

• asv-url-not-secure
  net.sourceforge.Lifeograph.metainfo.xml:103 - http://lifeograph.sourceforge.net
  Consider using a secure (HTTPS) URL for this web link.
• asv-description-first-word-not-capitalized
  net.sourceforge.Lifeograph.metainfo.xml:171 -
  The description line does not start with a capitalized word, project name or number.
• asv-nonstandard-gnome-extension
  net.sourceforge.Lifeograph.metainfo.xml:187 - 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.