Add ability to bypass strict no-disabled-events assertion when writin…

…g events

This is since the Gamestate Inspector can be invoked mid-event (using [inspect])
and it makes use of write_events().

(cherry-picked from commit afaa758)

src/game_events/manager.cpp

@@ -132,11 +132,14 @@ void manager::add_events(const config::const_child_itors& cfgs, const std::strin
 	}
 }
 
-void manager::write_events(config& cfg) const
+void manager::write_events(config& cfg, bool strict) const
 {
 	for(const handler_ptr& eh : event_handlers_->get_active()) {
 		if(eh && !eh->is_menu_item()) {
-			assert(!eh->disabled());
+			if(strict) {
+				assert(!eh->disabled());
+			}
+
 			cfg.add_child("event", eh->get_config());;
 		}
 	}

src/game_events/manager.hpp

@@ -68,7 +68,7 @@ class manager
 
 	void add_events(const config::const_child_itors& cfgs, const std::string& type = std::string());
 
-	void write_events(config& cfg) const;
+	void write_events(config& cfg, bool strict = true) const;
 
 	using event_func_t = std::function<void(game_events::manager&, handler_ptr&)>;
 	void execute_on_events(const std::string& event_id, event_func_t func);

src/gui/dialogs/gamestate_inspector.cpp

@@ -509,7 +509,7 @@ const display_context& single_mode_controller::dc() const {
 event_mode_controller::event_mode_controller(gamestate_inspector::controller& c)
 	: single_mode_controller(c)
 {
-	single_mode_controller::events().write_events(events);
+	single_mode_controller::events().write_events(events, false);
 }
 
 void variable_mode_controller::show_list(tree_view_node& node)