* AdminShowQuests fixes:
		* Fixed issue displaying quest with invalid quest state, leading to errors.
		* Fixed issue with non-repeatable quest not being deleted.
		* Removed useless try/catch clauses that only hide errors.
		* Added logger.
		* Code refactor, format and cleanup.
	* Quest Letters of Love (1) in java.
	* Missing Dragon Valley related quest Wings of Sand (455).
		* The reward part will be improved when I get more data.
	* DP part for [L5735].