Bug 583287: Some fields should not be displayed in bugmail for new bugs

Bugzilla/BugMail.pm

@@ -408,10 +408,10 @@ sub sendMail {
                 $value = $value->name;
             }
             elsif ($name eq 'estimated_time') {
-                $value = format_time_decimal($value);
+                $value = ($value == 0) ? 0 : format_time_decimal($value);
             }
             elsif ($name eq 'deadline') {
-                $value = time2str("%Y-%m-%d", str2time($value));
+                $value = time2str("%Y-%m-%d", str2time($value)) if $value;
             }
 
             # If there isn't anything to show, don't include this header.

Bugzilla/Field.pm

@@ -214,9 +214,9 @@ use constant DEFAULT_FIELDS => (
     {name => 'target_milestone',      desc => 'Target Milestone',
      buglist => 1},
     {name => 'creation_ts',           desc => 'Creation date',
-     in_new_bugmail => 1, buglist => 1},
+     buglist => 1},
     {name => 'delta_ts',              desc => 'Last changed date',
-     in_new_bugmail => 1, buglist => 1},
+     buglist => 1},
     {name => 'longdesc',              desc => 'Comment'},
     {name => 'longdescs.isprivate',   desc => 'Comment is private'},
     {name => 'alias',                 desc => 'Alias', buglist => 1},