Implemented CreateCharacter() and LoadCharacter() (read more)

There are issues with the indexes. That is, the accounts and the
characters need each other's indexes upon creation. I'll need to rectify
this now.

server/server_application.hpp

@@ -49,6 +49,7 @@
 
 //STL
 #include <map>
+#include <string>
 
 //The main application class
 class ServerApplication {
@@ -84,6 +85,11 @@ private:
 	void DeleteUserAccount(int uid);
 
 	//TODO: character management
+	int CreateCharacter(int owner, std::string handle, std::string avatar);
+	int LoadCharacter(int owner, std::string handle, std::string avatar);
+	void SaveCharacter();
+	void UnloadCharacter();
+	void DeleteCharacter();
 
 	//TODO: combat systems