[Content Filtering] Updates contents flags to be checked at runtime. (#1940)

* Updates contents flags to be checked at runtime.

* Fix formatting

* Add expansion flags

* Tweaks to logic

* Logic tweaks

* Update world_content_service.cpp

* Inverse DoesPassContentFiltering logic

* Update world_content_service.cpp

* Update world_content_service.cpp

Co-authored-by: Akkadius <akkadius1@gmail.com>

common/string_util.cpp

@@ -1021,6 +1021,11 @@ std::vector<std::string> GetBadWords()
 	};
 }
 
+bool contains(std::vector<std::string> container, std::string element)
+{
+    return std::find(container.begin(), container.end(), element) != container.end();
+}
+
 std::string ConvertSecondsToTime(int duration, bool is_milliseconds)
 {
 	if (duration <= 0) {
@@ -1259,4 +1264,4 @@ std::string ConvertMoneyToString(uint32 platinum, uint32 gold, uint32 silver, ui
 		);
 	}
 	return money_string;
-}
+}