fix bug reported by ludo (log in, non-admin) on project overview page

Dependencies

• [2] T7Z63K6T hydra: moves jobsetOverview sub
• [3] PPJN6SDP * paging for releases page
• [4] XBU2ODSP * More renaming.
• [*] 2GK5DOU7 * Downloading closures.

Change contents

• replacement in src/lib/Hydra/Helper/Nix.pm at line 196
  [2.149]→[2.149:245](∅→∅)
  − return $project->jobsets->search( isProjectOwner($c, $project->name) ? {} : { hidden => 0 },
  [2.149]

  [2.245]
  + return $project->jobsets->search( isProjectOwner($c, $project) ? {} : { hidden => 0 },