Add functions for toggling full filesize in project browser

Author: spoonmilk

ui/projectbrowser.h

@@ -99,7 +99,7 @@ class BINARYNINJAUIAPI ProjectItemModel: public QStandardItemModel, public Binar
 	virtual bool setData(const QModelIndex& index, const QVariant& value, int role = Qt::EditRole) override;
 
 	virtual void toggleGlobalShowFileSize();
-	virtual bool isGlobalShowFileSize() const;
+	virtual bool isGlobalShowFileSize();
 
 	enum {
 		TypeRole = Qt::UserRole,