[latex] Update manifest.ini

latex/manifest.ini

 [info]
 name: Latex
 short_name: latex
-version: 0.3.3
+version: 0.4.0
 description: render received latex code
 authors: Yves Fischer <yvesf@xapek.org>
  Yann Leboulanger <asterix@lagaule.org>
 homepage: http://trac-plugins.gajim.org/wiki/LatexPlugin
-min_gajim_version: 0.16.11
+min_gajim_version: 1.0.0