Send ETag and Expires headers

Dependencies

• [2] HSVVEKTY * Start of a JSON API to get information about a specific build.
• [*] J5UVLXOK * Start of a basic Catalyst web interface.
• [*] HOI5XQHS * Don't use a config file by default. This frees up $HYDRA_CONFIG so

Change contents

• edit in src/lib/Hydra.pm at line 42
  [5.601]

  [2.517]
  + },

  + 'Plugin::Static::Simple' => {

  + send_etag => 1,

  + expires => 3600