revert encodding of ' and /

The problem could exist in POSTing of edited data to the server.
Probably one should introduce additional option, which allows to post
encoded data or not. Currently jqGrid POST encoded data if
`autoencode:true` is set. If could be wrong way at least in two cases:
one use JSON serialization `content-type: application/json`, one send
XML data or if one use `content-type: application/x-www-form-urlencoded`
and jQuey.ajax makes HTML encoding automatically.

Before exact analysing the problem, I revert previous changes.

js/grid.base.js

@@ -554,8 +554,8 @@
 				String(value)
 					.replace(/>/g, ">")
 					.replace(/&lt;/g, "<")
-					.replace(/&#x27;/g, "'")
-					.replace(/&#x2F;/g, "\/")
+					//.replace(/&#x27;/g, "'")
+					//.replace(/&#x2F;/g, "\/")
 					.replace(/&quot;/g, "\"")
 					.replace(/&amp;/g, "&");
 		},
@@ -566,8 +566,8 @@
 				String(value)
 					.replace(/&/g, "&amp;")
 					.replace(/\"/g, "&quot;")
-					.replace(/\'/g, "&#x27;")
-					.replace(/\//g, "&#x2F;")
+					//.replace(/\'/g, "&#x27;")
+					//.replace(/\//g, "&#x2F;")
 					.replace(/</g, "&lt;")
 					.replace(/>/g, "&gt;");
 		},