diff --git a/app/views/welcome/course.html.erb b/app/views/welcome/course.html.erb
index 3aca2c350..ae90ba3d7 100644
--- a/app/views/welcome/course.html.erb
+++ b/app/views/welcome/course.html.erb
@@ -169,13 +169,15 @@
                   (<%= link_to "#{files_count}份", course_files_path(course) %>资料)
                 </div>
 
-                <div class='join_course_link'>
-                  <% if !course_endTime_timeout?(course) %>
+                <!--
+                 <div class='join_course_link'>
+                  <%# if !course_endTime_timeout?(course) %>
                       <div>
-                        <%= join_in_course(course, User.current) %>
+                        <%#= join_in_course(course, User.current) %>
                       </div>
-                  <% end %>
+                  <%# end %>
                 </div>
+                -->
               </li>
                   <%end%>
           <% end; reset_cycle %>
diff --git a/db/schema.rb b/db/schema.rb
index 72e6ccba9..7643adb4b 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -177,6 +177,58 @@ ActiveRecord::Schema.define(:version => 20140730024419) do
 
   add_index "changesets_issues", ["changeset_id", "issue_id"], :name => "changesets_issues_ids", :unique => true
 
+  create_table "code_review_assignments", :force => true do |t|
+    t.integer "issue_id"
+    t.integer "change_id"
+    t.integer "attachment_id"
+    t.string  "file_path"
+    t.string  "rev"
+    t.string  "rev_to"
+    t.string  "action_type"
+    t.integer "changeset_id"
+  end
+
+  create_table "code_review_project_settings", :force => true do |t|
+    t.integer  "project_id"
+    t.integer  "tracker_id"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+    t.integer  "updated_by"
+    t.boolean  "hide_code_review_tab",     :default => false
+    t.integer  "auto_relation",            :default => 1
+    t.integer  "assignment_tracker_id"
+    t.text     "auto_assign"
+    t.integer  "lock_version",             :default => 0,     :null => false
+    t.boolean  "tracker_in_review_dialog", :default => false
+  end
+
+  create_table "code_review_user_settings", :force => true do |t|
+    t.integer  "user_id",           :default => 0, :null => false
+    t.integer  "mail_notification", :default => 0, :null => false
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  create_table "code_reviews", :force => true do |t|
+    t.integer  "project_id"
+    t.integer  "change_id"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+    t.integer  "line"
+    t.integer  "updated_by_id"
+    t.integer  "lock_version",        :default => 0, :null => false
+    t.integer  "status_changed_from"
+    t.integer  "status_changed_to"
+    t.integer  "issue_id"
+    t.string   "action_type"
+    t.string   "file_path"
+    t.string   "rev"
+    t.string   "rev_to"
+    t.integer  "attachment_id"
+    t.integer  "file_count",          :default => 0, :null => false
+    t.boolean  "diff_all"
+  end
+
   create_table "comments", :force => true do |t|
     t.string   "commented_type", :limit => 30, :default => "", :null => false
     t.integer  "commented_id",                 :default => 0,  :null => false
@@ -367,9 +419,9 @@ ActiveRecord::Schema.define(:version => 20140730024419) do
     t.string   "web_title"
     t.string   "title"
     t.text     "description"
-    t.string   "page_type"
     t.datetime "created_at",                    :null => false
     t.datetime "updated_at",                    :null => false
+    t.string   "page_type"
     t.integer  "sort_type"
     t.integer  "image_width",  :default => 107
     t.integer  "image_height", :default => 63
@@ -795,18 +847,18 @@ ActiveRecord::Schema.define(:version => 20140730024419) do
   create_table "relative_memos", :force => true do |t|
     t.integer  "osp_id"
     t.integer  "parent_id"
-    t.string   "subject",                               :null => false
-    t.text     "content",                               :null => false
+    t.string   "subject",                                                   :null => false
+    t.text     "content",            :limit => 16777215,                    :null => false
     t.integer  "author_id"
-    t.integer  "replies_count",      :default => 0
+    t.integer  "replies_count",                          :default => 0
     t.integer  "last_reply_id"
-    t.boolean  "lock",               :default => false
-    t.boolean  "sticky",             :default => false
-    t.boolean  "is_quote",           :default => false
-    t.datetime "created_at",                            :null => false
-    t.datetime "updated_at",                            :null => false
-    t.integer  "viewed_count_crawl", :default => 0
-    t.integer  "viewed_count_local", :default => 0
+    t.boolean  "lock",                                   :default => false
+    t.boolean  "sticky",                                 :default => false
+    t.boolean  "is_quote",                               :default => false
+    t.datetime "created_at",                                                :null => false
+    t.datetime "updated_at",                                                :null => false
+    t.integer  "viewed_count_crawl",                     :default => 0
+    t.integer  "viewed_count_local",                     :default => 0
     t.string   "url"
     t.string   "username"
     t.string   "userhomeurl"
@@ -830,6 +882,19 @@ ActiveRecord::Schema.define(:version => 20140730024419) do
 
   add_index "repositories", ["project_id"], :name => "index_repositories_on_project_id"
 
+  create_table "rich_rich_files", :force => true do |t|
+    t.datetime "created_at",                                 :null => false
+    t.datetime "updated_at",                                 :null => false
+    t.string   "rich_file_file_name"
+    t.string   "rich_file_content_type"
+    t.integer  "rich_file_file_size"
+    t.datetime "rich_file_updated_at"
+    t.string   "owner_type"
+    t.integer  "owner_id"
+    t.text     "uri_cache"
+    t.string   "simplified_type",        :default => "file"
+  end
+
   create_table "roles", :force => true do |t|
     t.string  "name",              :limit => 30, :default => "",        :null => false
     t.integer "position",                        :default => 1
@@ -880,10 +945,11 @@ ActiveRecord::Schema.define(:version => 20140730024419) do
     t.string   "url"
     t.string   "title"
     t.integer  "share_type"
-    t.datetime "created_at", :null => false
-    t.datetime "updated_at", :null => false
+    t.datetime "created_at",  :null => false
+    t.datetime "updated_at",  :null => false
     t.integer  "project_id"
     t.integer  "user_id"
+    t.string   "description"
   end
 
   create_table "softapplications", :force => true do |t|
@@ -989,8 +1055,8 @@ ActiveRecord::Schema.define(:version => 20140730024419) do
     t.integer  "zip_code"
     t.datetime "created_at",         :null => false
     t.datetime "updated_at",         :null => false
-    t.integer  "identity"
     t.string   "technical_title"
+    t.integer  "identity"
     t.string   "student_id"
     t.string   "teacher_realname"
     t.string   "student_realname"
@@ -1048,9 +1114,6 @@ ActiveRecord::Schema.define(:version => 20140730024419) do
     t.integer  "active"
     t.datetime "created_at",    :null => false
     t.datetime "updated_at",    :null => false
-    t.integer  "level"
-    t.integer  "file"
-    t.integer  "issue"
   end
 
   create_table "user_statuses", :force => true do |t|