Fix link to cached build log

Dependencies

• [2] EYAA7MJY hydra-server: Support logs in S3
• [3] 3PNG7NIB Remove trailing whitespace
• [4] Y6AHH4TH Remove the logfile and logSize columns from the database
• [5] ZH6B56XR Try harder to find build logs
• [6] HPEG2RHV Merge the BuildResultInfo table into the Builds table
• [7] LBNVQXUB * Build the /build stuff in a separate controller.
• [8] 2GUAKGTB Fix indentation of build.tt
• [9] TPNHTE5V Remove obsolete Builds columns and provide accurate "Running builds"
• [10] R7MDDCB2 Some unnecessary job names
• [11] PMNWRTGJ Add multiple output support
• [12] H47WLVAT * Handle the case where there is no cached build step that produced
• [13] HB3OHPJL hydra: in case of cached build, add link to build that built the storepath
• [14] K22TMPH5 Make the info tables less compressed
• [*] J5UVLXOK * Start of a basic Catalyst web interface.

Change contents

• replacement in src/lib/Hydra/Controller/Build.pm at line 76
  [3.210]→[3.0:88](∅→∅),[3.391]→[3.0:88](∅→∅),[3.2417]→[3.0:88](∅→∅),[3.188]→[3.0:88](∅→∅)
  − $c->stash->{cachedBuild} = $cachedBuildStep->build if defined $cachedBuildStep;
  [3.391]

  [3.1105]
  + if (defined $cachedBuildStep) {

  + $c->stash->{cachedBuild} = $cachedBuildStep->build;

  + $c->stash->{cachedBuildStep} = $cachedBuildStep;

  + }
• replacement in src/root/build.tt at line 140
  [3.68]→[3.2134:2229](∅→∅)
  − [% IF steps %]<li><a href="#tabs-buildsteps" data-toggle="tab">Build steps</a></li>[% END %]
  [3.68]

  [3.1968]
  + [% IF steps.size() > 0 %]<li><a href="#tabs-buildsteps" data-toggle="tab">Build steps</a></li>[% END %]
• replacement in src/root/build.tt at line 233
  [3.6532]→[2.2279:2608](∅→∅)
  − <a class="btn btn-mini" href="[% c.uri_for('/build' actualBuild.id 'log') %]">pretty</a>

  − <a class="btn btn-mini" href="[% c.uri_for('/build' actualBuild.id 'log' 'raw') %]">raw</a>

  − <a class="btn btn-mini" href="[% c.uri_for('/build' actualBuild.id 'log' 'tail') %]">tail</a>
  [3.6532]

  [3.6622]
  + [% actualLog = cachedBuildStep ? c.uri_for('/build' cachedBuild.id 'nixlog' cachedBuildStep.stepnr) : c.uri_for('/build' build.id 'log') %]

  + <a class="btn btn-mini" href="[%actualLog%]">pretty</a>

  + <a class="btn btn-mini" href="[%actualLog%]/raw">raw</a>

  + <a class="btn btn-mini" href="[%actualLog%]/tail">tail</a>