Fix error on generating activity page when there is no activity

James Moger

2013-10-15 e1908933fa9968b11e9ea03d88730aee3140534b

 src/main/java/com/gitblit/utils/JGitUtils.java

@@ -1540,7 +1540,7 @@
    */

   public static boolean setBranchRef(Repository repository, String branch, String commitId) {

      String branchName = branch;

      if (!branchName.startsWith(Constants.R_HEADS)) {

      if (!branchName.startsWith(Constants.R_REFS)) {

         branchName = Constants.R_HEADS + branch;

      }