Only send email notification of evaluation error when the evaluation error has changed. Fixes #121.

Dependencies

• [2] WQXF2T3D hydra-evaluator: Don't require $HYDRA_CONFIG
• [3] H7CNGK4O * Log evaluation errors etc. in the DB.
• [4] NLJJZVHO * Use ->update({...}) properly.
• [5] ZDENAYQI * email notification of evaluation errors to project owner (if desired)
• [*] N22GPKYT * Put info about logs / build products in the DB.

Change contents

• edit in src/script/hydra-evaluator at line 44
  [3.3019]

  [3.3019]
  + my $prevError = $jobset->errormsg;

  +
• replacement in src/script/hydra-evaluator at line 51
  [3.3184]→[2.1231:1284](∅→∅)
  − sendJobsetErrorNotification($jobset, $errorMsg);
  [3.3184]

  [3.3184]
  + if ($errorMsg ne $prevError) {

  + sendJobsetErrorNotification($jobset, $errorMsg);

  + }