limit the length of message to 20
Merge pull request #208 from leizongmin/master

Fixed #158 使用EpicEditor编辑器，有预览功能
Merge pull request #205 from jiyinyiyong/master

limit the length of message to 20, 限制回复列表
Merge pull request #209 from leizongmin/master

Fixed #208 解决打开Topic时自动跳到输入框问题
Add OS regular files to .gitignore
Merge pull request #211 from tjwudi/master

Add OS regular files to .gitignore
Fix 'title' textarea layout problem.

Originally, you can resize the #title textarea, but that can lead
to serious layout problem when you resize it with a very long width.
The fieldset will be stretched, then the layout will be destroyed.
Merge pull request #212 from tjwudi/master

Fix 'title' textarea layout problem.
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