diff --git a/.gitignore b/.gitignore
index 8a40f3ca7..a1f5f7e76 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@
 /config/database.yml
 /config/configuration.yml
 /config/additional_environment.rb
+/config/oneapm.yml
 
 
 /files/*
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 2a91b75ae..7e9add5e2 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -2156,11 +2156,9 @@ class UsersController < ApplicationController
     @user = User.current
     if !params[:search].nil?
       search = "%#{params[:search].to_s.strip.downcase}%"
-      @course = @user.courses.where(" #{Course.table_name}.id = #{params[:search].to_i } or #{Course.table_name}.name like :p",:p=>search)
-      .select { |course|  @user.allowed_to?(:as_teacher,course) and course.is_delete == 0 }
+      @course = @user.courses.not_deleted.where(" #{Course.table_name}.id = #{params[:search].to_i } or #{Course.table_name}.name like :p",:p=>search)
     else
-      @course = @user.courses
-      .select { |course|  @user.allowed_to?(:as_teacher,course)  and course.is_delete == 0 }
+      @course = @user.courses.not_deleted
     end
     @search = params[:search]
     @type = params[:type]
@@ -2178,7 +2176,7 @@ class UsersController < ApplicationController
     @user = User.current
     if !params[:search].nil?
       search = "%#{params[:search].to_s.strip.downcase}%"
-      @projects = @user.projects.where(" #{Project.table_name}.id = #{params[:search].to_i } or #{Project.table_name}.name like :p",:p=>search)
+      @projects = @user.projects.visible.where(" #{Project.table_name}.id = #{params[:search].to_i } or #{Project.table_name}.name like :p",:p=>search)
     else
       @projects = @user.projects.visible
     end
diff --git a/app/models/at_message.rb b/app/models/at_message.rb
index 5a175fe76..2212ef07e 100644
--- a/app/models/at_message.rb
+++ b/app/models/at_message.rb
@@ -89,7 +89,7 @@ class AtMessage < ActiveRecord::Base
             status = -1
           end
       when 'JournalsForMessage'
-        if at_message.jour && at_message.jour.course
+        if at_message.jour && defined? at_message.jour.course
           #作业回复
           shield_type = "Course"
           container_id = at_message.jour.course.id
@@ -99,7 +99,7 @@ class AtMessage < ActiveRecord::Base
         else
           type = "journal_for_message"
           detail_id = topic.id
-          detail_title = at_message.subject
+          detail_title = at_message.notes
         end
       else
         status = -1
diff --git a/app/views/courses/new.html.erb b/app/views/courses/new.html.erb
index 4c4374a29..f754c4540 100644
--- a/app/views/courses/new.html.erb
+++ b/app/views/courses/new.html.erb
@@ -17,12 +17,13 @@
         <div class="cl"></div>
         <li  class="ml45">
           <label><span class="c_red">*</span>&nbsp;<%= l(:label_tags_course_name)%>&nbsp;&nbsp;：</label>
-          <input  type="text" name="course[name]" id="new_course_name" class="courses_input" maxlength="100" placeholder="例如：软件工程计算机系A班" onkeyup="regex_course_name('new');">
+          <input  type="text" name="course[name]" id="new_course_name" class="courses_input" maxlength="100" placeholder="例如：计算机系2016秋季A班" onkeyup="regex_course_name('new');">
           <span class="c_red" id="new_course_name_notice" style="display: none;">班级名称不能为空且至少有两个字符</span>
         </li>
         <div class="cl"></div>
         <li class="ml125 mb5 fontGrey3"><span class="success-icon mr25">正确示例：计算机系2016秋季A班</span></li>
         <li class="ml125 mb10 fontGrey3"><span class="error-icon">错误示例：软件工程 - 计算机系2016秋季A班</span></li>
+        <li class="ml125 mt10 mb10 fontGrey2" style="max-width: 544px;">班级是一个由教师、助教（教辅）和学生组成的临时的教学群体，在规定的时间内（如一个学期）完成一门课程规定的教学任务。本质上，一门课程就是一个教学计划。</li>
         <li  class="ml45">
           <label><span class="c_red">*</span>&nbsp;<%= l(:label_class_period)%>&nbsp;&nbsp;：</label>
           <input  type="text" name="class_period" id="new_class_period" class="hwork_input02" onkeyup="regex_course_class_period('new');" placeholder="例如：54" maxlength="6">
diff --git a/app/views/users/_message_replies.html.erb b/app/views/users/_message_replies.html.erb
index 669aea26c..ce1e70887 100644
--- a/app/views/users/_message_replies.html.erb
+++ b/app/views/users/_message_replies.html.erb
@@ -24,6 +24,8 @@
                       <%=render :partial=> "praise_tread/praise", :locals => {:activity=>comment, :user_activity_id=>comment.id,:type=>"reply"}%>
                     </span>
                   <% if type == 'Message' %>
+                    <% topic = comment.root %>
+                    <% if !topic.locked? && authorize_for('messages', 'reply') %>
                     <span style="position: relative" class="fr mr20">
                         <%= link_to(
                                     l(:button_reply),
@@ -33,6 +35,7 @@
                                     :title => l(:button_reply)) %>
                       <span id="reply_iconup_<%=comment.id %>" class="reply_iconup02" style="display: none"> ︿</span>
                     </span>
+                    <% end %>
                     <% if comment.course_destroyable_by?(User.current) || comment.destroyable_by?(User.current) %>
                       <%= link_to(
                                   l(:button_delete),