Hints for xgterm in main

Hints

• asv-cid-maybe-not-rdns
  <code>community.iraf.xgterm.metainfo.xml:3</code> - <em>community.iraf.xgterm</em><br/>The component ID might not follow the reverse domain-name schema (the TLD used by it is not known to the validator).
• asv-developer-info-missing
  <code>community.iraf.xgterm.metainfo.xml</code> - <em></em><br/>This component contains no `developer` element with information about its author.