Began bringing the client into line with the server's changes

Several parts of the client already built correctly.

Updated LobbyMenu, it not builds.

common/map/region_pager.hpp

@@ -29,6 +29,7 @@
 #include <list>
 #include <string>
 
+//TODO: split this into two: "RegionPagerBase" and "RegionPagerLua"
 class RegionPager {
 public:
 	RegionPager() = default;