Don't break certain table columns

For instance, if the "timestamp" column becomes too small, then every
timestamp is spread out across two lines, doubling the size of the
table.

src/root/common.tt

@@ -98,8 +98,8 @@ BLOCK renderBuildListBody;
         <td>[% INCLUDE renderFullJobNameOfBuild %]</td>
       [% END %]
       <td>[% !showSchedulingInfo and build.get_column('releasename') ? build.get_column('releasename') : build.nixname %]</td>
-      <td><tt>[% build.system %]</tt></td>
-      <td>[% date.format(showSchedulingInfo ? build.timestamp : build.stoptime, '%Y-%m-%d %H:%M:%S') %]</td>
+      <td class="nowrap"><tt>[% build.system %]</tt></td>
+      <td class="nowrap">[% date.format(showSchedulingInfo ? build.timestamp : build.stoptime, '%Y-%m-%d %H:%M:%S') %]</td>
       [% IF showStatusChange %]
         <td>
           [% IF build.get_column('statusChangeTime') %]
@@ -415,7 +415,7 @@ BLOCK renderEvals %]
             <td>[% INCLUDE renderFullJobsetName project=eval.get_column('project') jobset=eval.get_column('jobset') %]</td>
           [% END %]
           <td><a class="row-link" href="[% link %]">[% eval.id %]</a></td>
-          <td>[% INCLUDE renderDateTime timestamp = eval.timestamp %]</td>
+          <td class="nowrap">[% INCLUDE renderDateTime timestamp = eval.timestamp %]</td>
           <td>
             [% IF e.changedInputs.size > 0;
               sep='';
@@ -427,14 +427,14 @@ BLOCK renderEvals %]
              -
             [% END %]
           </td>
-          <td align='right'>
+          <td align='right' class="nowrap">
             <span class="label label-success">[% e.nrSucceeded %]</span>
             <span class="label label-important">[% e.nrFailed %]</span>
             [% IF e.nrScheduled > 0 %]
             <span class="label">[% e.nrScheduled %]</span>
             [% END %]
           </td>
-          <td align='right'>
+          <td align='right' class="nowrap">
             [% IF e.diff > 0 %]
               <span class='label label-success'><strong>+[% e.diff %]</strong></span>
             [% ELSIF e.diff < 0 && e.nrScheduled == 0 %]

src/root/static/css/hydra.css

@@ -87,3 +87,7 @@ div.page-header h1 small {
 div.news-item:not(:first-child) {
     margin-top: 1em;
 }
+
+td.nowrap {
+    white-space: nowrap;
+}