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Update README.md
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fixed #173
Fix #172
Merge remote-tracking branch 'origin/master'

Conflicts:
	views/index.html
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Merge branch 'master' of https://github.com/b3log/wide
.
。。
冲突啊，不要改前端代码先
fixed #174
黑色主题样式修改
bottom-window-group 高度修改
fixed #178
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fixed  #181
#181 i18n