Metadata for singular in testing

<component type="desktop-application">
  <id>Singular.desktop</id>
  <name>Singular</name>
  <summary>run Singular 4.3.2 in a terminal</summary>
  <summary xml:lang="de">Singular 4.3.2 in einem Terminal starten</summary>
  <summary xml:lang="fr">démarrer Singular 4.3.2 dans un terminal</summary>
  <description>
    <p>Computer algebra system for polynomial computations</p>
  </description>
  <pkgname>singular</pkgname>
  <launchable type="desktop-id">Singular.desktop</launchable>
  <icon type="cached" width="64" height="64">singular_Singular.png</icon>
  <icon type="remote" width="64" height="64">s/si/singular.desktop/68dc3ab7f1896704029b6fcd8b5b4b1b/icons/64x64/singular_Singular.png</icon>
  <categories>
    <category>Math</category>
    <category>Science</category>
    <category>Education</category>
  </categories>
</component>