Set a custom dialog caption for the synced debug command prompt

This replaces the caption with something more apropos than the generic
"Save Game" caption. It necessitates a minor API change though.

src/savegame.cpp

@@ -326,8 +326,8 @@ void loadgame::copy_era(config &cfg)
 
 savegame::savegame(saved_game& gamestate, const compression::format compress_saves, const std::string& title)
 	: filename_()
-	, gamestate_(gamestate)
 	, title_(title)
+	, gamestate_(gamestate)
 	, error_message_(_("The game could not be saved: "))
 	, show_confirmation_(false)
 	, compress_saves_(compress_saves)

src/savegame.hpp

@@ -204,6 +204,9 @@ class savegame
 	/** Filename of the savegame file on disk */
 	std::string filename_;
 
+	/** Title of the savegame dialog */
+	std::string title_;
+
 private:
 	/** Checks if a certain character is allowed in a savefile name. */
 	static bool is_illegal_file_char(char c);
@@ -227,8 +230,6 @@ class savegame
 	//before_save (write replay data) changes this so it cannot be const
 	saved_game& gamestate_;
 
-	const std::string title_; /** Title of the savegame dialog */
-
 	std::string error_message_; /** Error message to be displayed if the savefile could not be generated. */
 
 	bool show_confirmation_; /** Determines if a confirmation of successful saving the game is shown. */
@@ -281,6 +282,9 @@ class oos_savegame : public ingame_savegame
 public:
 	oos_savegame(saved_game& gamestate, bool& ignore);
 
+	/** Customize the dialog's caption. */
+	void set_title(const std::string& val) { title_ = val; }
+
 private:
 	/** Display the save game dialog. */
 	virtual int show_save_dialog(const std::string& message, DIALOG_TYPE dialog_type) override;

src/synced_commands.cpp

@@ -402,6 +402,7 @@ namespace
 			sbuilder << "The game detected the use of a debug command, maybe another player is cheating";
 			sbuilder << "\n\n" << "details:" << "\n\n" << VGETTEXT(message, {{"player", current_team.current_player()}});
 			savegame::oos_savegame save(controller.get_saved_game(), ignore);
+			save.set_title("Debug Command Used");
 			save.save_game_interactive(sbuilder.str(), savegame::savegame::YES_NO); // can throw quit_game_exception
 		}
 		else {