Refactor Game class (part 2) (#5422)

* showPauseMenu is now part of game
* remove many flags parameters passed to game functions, use the member.
* rename VolatileRunFlags to GameUIFlags (this will permit to share structure with client and CSM
* updatePointedThing: remove pointer ref, we already have the pointer in rundata
* move some attributes outside of VolatileRunFlags after renaming, to game class
* rename statustext to m_statustext
* make some const variables static
* All those changes permit to reduce a little bit function class cost and will permit to interface CSM with some interesting Game flags
* Expose GameUIFlags to client
* Client now have GameUIFlags parameter and setters for other classes
* Fix minimap show/hide in Lua because we now have access to the real flag

src/guiFormSpecMenu.h

@@ -335,7 +335,7 @@ public:
 	void removeChildren();
 	void setInitialFocus();
 
-	void setFocus(std::string &elementname)
+	void setFocus(const std::string &elementname)
 	{
 		m_focused_element = elementname;
 	}