修改bug《新建版本时输入wiki页面为非汉字类型且长度够长，点击提交报500错误》

Signed-off-by: alan <547533434@qq.com>

app/controllers/files_controller.rb

@@ -275,6 +275,8 @@ class FilesController < ApplicationController
 
     respond_to do |format|
       format.js
+      
+
     end
   end
 end

app/views/files/index.html.erb

@@ -105,7 +105,7 @@
     }
 
     function course_attachmenttypes_searchex(value) {
-        <% if  @course%>
+        <% if  @course %>
         $.ajax({
             url: '<%=getattachtype_course_files_path(course_id: @course)%>',
             type: "POST",

app/views/versions/_form.html.erb

@@ -15,7 +15,7 @@
 </p>
 <p style="margin-left:-20px;">
   <span style="margin-left:10px;">
-    <%= f.text_field :wiki_page_title, :label => :label_wiki_page, :maxlength => 60, :disabled => @project.wiki.nil? %>
+    <%= f.text_field :wiki_page_title, :label => :label_wiki_page, :disabled => @project.wiki.nil? %>
   </span>
 </p>
 <p style="margin-left:-20px;">