* Give releases a timestamp.

src/Hydra/lib/Hydra/Controller/Root.pm

@@ -229,6 +229,10 @@ sub getRelease {
 
     my $status = 0; # = okay
 
+    # The timestamp of the release is the highest timestamp of all
+    # constitutent builds.
+    my $timestamp = 0;
+        
     foreach my $job (@{$c->stash->{jobs}}) {
         my $thisBuild;
 
@@ -254,6 +258,9 @@ sub getRelease {
             }
         }
 
+        $timestamp = $thisBuild->timestamp
+            if defined $thisBuild && $thisBuild->timestamp > $timestamp;
+
         push @jobs, { build => $thisBuild, job => $job };
     }
 
@@ -262,6 +269,7 @@ sub getRelease {
         , releasename => $primaryBuild->get_column('releasename')
         , jobs => [@jobs]
         , status => $status
+        , timestamp => $timestamp
         };
 }
 

src/Hydra/root/releases.tt

@@ -12,6 +12,7 @@
       <th></th>
       <th>#</th>
       <th>Release</th>
+      <th>Date</th>
       [% FOREACH job IN jobs %]
         <th class="releaseSetJobName">[% PROCESS renderReleaseJobName %]</th>
       [% END %]
@@ -39,6 +40,7 @@
             <em>No name</em>
           [% END %]
         </td>
+        <td>[% INCLUDE renderDateTime timestamp=release.timestamp %]</td>
         [% FOREACH job IN release.jobs %]
           <td class="centered">
             [% IF job.build %]

src/Hydra/sql/hydra.sql

@@ -297,11 +297,11 @@ create trigger cascadeUserDelete
 -- consists of, namely: a release consists of a build of some
 -- "primary" job, plus all builds of the other jobs named in
 -- ReleaseSetJobs that have that build as an input.  If there are
--- multiple builds matching a ReleaseSetJob, then we take the *oldest*
+-- multiple builds matching a ReleaseSetJob, then we take the oldest
--- successful build (for release stability), or the *newest*
+-- successful build, or the oldest unsuccessful build if there is no
--- unsuccessful build if there is no succesful build.  A release is
+-- successful build.  A release is itself considered successful if all
--- itself considered successful if all builds (except those for jobs
+-- builds (except those for jobs that have mayFail set) are
--- that have mayFail set) are successful.
+-- successful.
 --
 -- Note that individual releases aren't separately stored in the
 -- database, so they're really just a dynamic view on the universe of