Version revert logic improvements, colorful icons for mod lists and resource pack list.

Icons are from Oxygen.

gui/pages/TexturePackPage.h

@@ -0,0 +1,20 @@
+#pragma once
+#include "ModFolderPage.h"
+
+class TexturePackPage : public ModFolderPage
+{
+public:
+	explicit TexturePackPage(BaseInstance *instance, QWidget *parent = 0)
+		: ModFolderPage(instance->texturePackList(), "texturepacks", "resourcepacks",
+						tr("Texture packs"), parent)
+	{
+		m_inst = instance;
+	}
+	virtual ~TexturePackPage() {};
+	virtual bool shouldDisplay() override
+	{
+		return m_inst->traits().contains("texturepacks");
+	}
+private:
+	BaseInstance *m_inst;
+};