--User changes

-Add variations filter/selection dialog.

--Bug fixes
 -Fix summary window not properly indicating the presence of pose affine.
 -Remove a file named Fractorium.aps which had been erroneously committed a year ago.

--Code changes
 -Use qobject_cast instead of dynamic_cast where appropriate.
 -Add more override keyword where appropriate.
 -Add variations list to settings for filter dialog.

Source/Fractorium/FractoriumSettings.h

@@ -60,6 +60,8 @@
 #define IDENTITYURL			 "identity/url"
 #define IDENTITYNICK		 "identity/nick"
 
+#define UIVARIATIONS		 "ui/variations"
+
 /// <summary>
 /// Class for preserving various program options between
 /// runs of Fractorium. Each of these generally corresponds
@@ -209,4 +211,7 @@ public:
 
 	QString Nick();
 	void Nick(const QString& s);
+
+	QMap<QString, QVariant> Variations();
+	void Variations(const QMap<QString, QVariant>& m);
 };