Hints for nfoview in main

Hints

• asv-developer-name-tag-deprecated
  <code>io.otsaloma.nfoview.appdata.xml:99</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>io.otsaloma.nfoview.appdata.xml</code> - <em></em><br/>This component contains no `developer` element with information about its author.