Worked these changes into the client & server (read more)

The changes were fairly easy, and I was actually able to find and fix an
out-of-sequence bug: The destructors for the AccountManager and the
CharacterManager were using SQL code after the call to SQLite3_close_v2(),
so I added and called UnloadAll() for both of them.

server/character_manager.hpp

@@ -31,8 +31,8 @@
 
 class CharacterManager {
 public:
-	CharacterManager();
-	~CharacterManager();
+	CharacterManager() = default;
+	~CharacterManager() { UnloadAll(); };
 
 	//public access methods
 	int CreateCharacter(int owner, std::string handle, std::string avatar);
@@ -43,6 +43,8 @@ public:
 
 	void UnloadCharacterIf(std::function<bool(std::map<int, CharacterData>::iterator)> f);
 
+	void UnloadAll();
+
 	//accessors and mutators
 	CharacterData* GetCharacter(int uid);
 	std::map<int, CharacterData>* GetContainer();