don't list out all sourceSkpFile names in the rebaseline_server UI

gm/rebaseline_server/compare_rendered_pictures.py

 #!/usr/bin/python
 
 """
 Copyright 2014 Google Inc.
 
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 
 Compare results of two render_pictures runs.
 
@@ skipping 28 matching lines @@
 # from the input summary files, or allow the caller to set it within the
 # GET_live_results call.
 DEFAULT_IMAGE_BASE_GS_URL = 'gs://' + buildbot_globals.Get('skp_images_bucket')
 
 # Column descriptors, and display preferences for them.
 COLUMN__RESULT_TYPE = results.KEY__EXTRACOLUMNS__RESULT_TYPE
 COLUMN__SOURCE_SKP = 'sourceSkpFile'
 COLUMN__TILED_OR_WHOLE = 'tiledOrWhole'
 COLUMN__TILENUM = 'tilenum'
 FREEFORM_COLUMN_IDS = [
+    COLUMN__SOURCE_SKP,
     COLUMN__TILENUM,
 ]
 ORDERED_COLUMN_IDS = [
     COLUMN__RESULT_TYPE,
     COLUMN__SOURCE_SKP,
     COLUMN__TILED_OR_WHOLE,
     COLUMN__TILENUM,
 ]
 
 # A special "repo:" URL type that we use to refer to Skia repo contents.
@@ skipping 318 matching lines @@
     """
     if gs_utils.GSUtils.is_gs_url(source_dir):
       (bucket, path) = gs_utils.GSUtils.split_gs_url(source_dir)
       self._gs.download_dir_contents(source_bucket=bucket, source_dir=path,
                                      dest_dir=dest_dir)
     elif source_dir.lower().startswith(REPO_URL_PREFIX):
       repo_dir = os.path.join(REPO_BASEPATH, source_dir[len(REPO_URL_PREFIX):])
       shutil.copytree(repo_dir, dest_dir)
     else:
       shutil.copytree(source_dir, dest_dir)