Fix Sidebar button for touch device & CHANGELOG-zh-cn & FreeBSD installation instructions (#916)

* Disallow change optional limit on public proxy

* Add Chinese for Mute plugins

* add FreeBSD installation instructions to README-zh-cn.md

* Fix Sidebar button for touch device

* Add CHANGELOG-zh-cn.md

* Why merging junk left? Remove it!

plugins/Mute/languages/zh-tw.json

@@ -3,4 +3,4 @@
 	"Mute": "屏蔽",
 	"Unmute <b>%s</b>?": "對 <b>%s</b> 解除屏蔽？",
 	"Unmute": "解除屏蔽"
-}
+}

plugins/Mute/languages/zh.json

@@ -3,4 +3,4 @@
 	"Mute": "屏蔽",
 	"Unmute <b>%s</b>?": "对 <b>%s</b> 解除屏蔽？",
 	"Unmute": "解除屏蔽"
-}
+}