filebrowser: add size() and getFilter() members

Origin commit data
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Commit: cc645d23a0
Author: TangoCash <eric@loxat.de>
Date: 2017-12-20 (Wed, 20 Dec 2017)

Origin message was:
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- filebrowser: add size() and getFilter() members

src/gui/filebrowser.h

@@ -135,6 +135,8 @@ public:
 		return false;
 	};
 	void Clear(void) { Filter.clear();};
+	size_t size(void) { return Filter.size();};
+	std::string getFilter(int i) { return Filter.at(i);};
 };
 //------------------------------------------------------------------------