changelog: encode branch names with

ref: https://secure.rhodecode.org/rhodecode-fork-kiilerix/changeset/e175420889dc0d2f530bde8e094cc314e129d1a6

rhodecode/templates/changelog/changelog.html

@@ -244,7 +244,7 b''
                     var selected_branch = e.currentTarget.options[e.currentTarget.selectedIndex].value;
                     var url_main = "${h.url('changelog_home',repo_name=c.repo_name)}";
                     var url = "${h.url('changelog_home',repo_name=c.repo_name,branch='__BRANCH__')}";
-                    var url = url.replace('__BRANCH__',selected_branch);
+                    var url = url.replace('__BRANCH__', encodeURIComponent(selected_branch));
                     if(selected_branch != ''){
                         window.location = url;
                     }else{