[js:core] fix problem that options.drawString encoder does not effect

Author: nao-pon

js/elFinder.js

@@ -4696,6 +4696,11 @@ var elFinder = function(elm, opts, bootCallback) {
 					},
 					toChkTh = {};
 
+				// regist rawStringDecoder
+				if (self.options.rawStringDecoder) {
+					self.registRawStringDecoder(self.options.rawStringDecoder);
+				}
+
 				// re-calculate elFinder node z-index
 				self.zIndexCalc();