BaseKeyboardSupport.js (SVACE): move selectorsString before its usage

[Issue] SVACE 609483
[Problem] Watning Message:
	Move the declaration of "selectorsString"
	before this usage
[Solution] move selectorsString before its usage

Signed-off-by: Grzegorz Czajkowski <g.czajkowski@samsung.com>

src/js/core/widget/BaseKeyboardSupport.js

@@ -39,6 +39,7 @@
 				prototype = {
 					_supportKeyboard: false
 				},
+				selectorsString = "",
 				BaseKeyboardSupport = function () {
 					var self = this,
 						options = self.options || {};
@@ -119,7 +120,6 @@
 					count: 1
 				}
 				],
-				selectorsString = "",
 				/**
 				* @property {Array} Array containing number of registrations of each selector
 				* @member ns.widget.tv.BaseKeyboardSupport