Add a second action menu to IssuesController#show. (#4331)

Will have the update, log time, watch, copy, etc buttons.  Had to rework
how the watchers button works since it requires a unique DOM id for the
Ajax response.  Also modified the WatchersController to be able to replace
multiple sections of the page, e.g. two Watch links.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3119 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/watchers_controller.rb

@@ -72,9 +72,24 @@ private
   
   def set_watcher(user, watching)
     @watched.set_watcher(user, watching)
+    if params[:replace].present?
+      if params[:replace].is_a? Array
+        replace_ids = params[:replace]
+      else
+        replace_ids = [params[:replace]]
+      end
+    else
+      replace_ids = 'watcher'
+    end
     respond_to do |format|
       format.html { redirect_to :back }
-      format.js { render(:update) {|page| page.replace_html 'watcher', watcher_link(@watched, user)} }
+      format.js do
+        render(:update) do |page|
+          replace_ids.each do |replace_id|
+            page.replace_html replace_id, watcher_link(@watched, user, :replace => replace_ids)
+          end
+        end
+      end
     end
   rescue ::ActionController::RedirectBackError
     render :text => (watching ? 'Watcher added.' : 'Watcher removed.'), :layout => true