Fix that opacity slider

Tom

2014-11-13 11e5e5d409e6c80617b3569199e404c8e4e44e06

 src/main/java/com/gitblit/wicket/pages/CommitDiffPage.java

@@ -85,6 +85,9 @@
      final ImageDiffHandler handler = new ImageDiffHandler(getContextUrl(), repositoryName,
            parents.isEmpty() ? null : parents.get(0), commit.getName(), imageExtensions);
      final DiffOutput diff = DiffUtils.getCommitDiff(r, commit, DiffOutputType.HTML, handler);
      if (handler.getImgDiffCount() > 0) {
         addBottomScript("scripts/imgdiff.js"); // Tiny support script for image diffs
      }

      // add commit diffstat
      int insertions = 0;