Use latest web-console when using --dev or --edge

Fixes:

http://intertwingly.net/projects/AWDwR4/checkdepot-215/makedepot.log

railties/lib/rails/generators/app_base.rb

@@ -111,6 +111,7 @@ def gemfile_entries
          jbuilder_gemfile_entry,
          sdoc_gemfile_entry,
          psych_gemfile_entry,
+         console_gemfile_entry,
          @extra_entries].flatten.find_all(&@gem_filter)
       end
 
@@ -261,6 +262,15 @@ def sdoc_gemfile_entry
         GemfileEntry.new('sdoc', '~> 0.4.0', comment, group: :doc)
       end
 
+      def console_gemfile_entry
+        comment = 'Use Rails Console on the Browser'
+        if options.dev? || options.edge?
+          GemfileEntry.github 'web-console', 'rails/web-console', comment
+        else
+          []
+        end
+      end
+
       def coffee_gemfile_entry
         comment = 'Use CoffeeScript for .coffee assets and views'
         if options.dev? || options.edge?