add a code list hint in markdown
Finish Block of codes helper
Add block of code for Topic and Wiki page
Fix conflics
add missing line
move css from wiki to page
remove extra line
change a few html elements' id
Merge pull request #198 from i3zhe/codes-hint

插入代码的快捷方式，以代替手工输入
插入代码的功能调整;
Mobile 样式调整;
Wiki 修正;
insert_code_menu_items_tag 调整;
插入代码修正首行多出空行的问题;
升级 rouge 以便支持更多语言高亮;
为帖子的回复楼层添加链接
correct 2 tests in spec/helpers/topics_helper_spec.rb to fit rouge v0.3.10
Merge pull request #199 from edgarwang/add-reply-floor-link

为帖子的回复楼层添加链接
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fix ol style.