Cleanup few leftovers:
Fixing minor typo reverting years in header
Using Util#isDigit instead of local method.
Reported by: @jurchiks
Minor typo fixes for Jython quests.

Reported by: guerra5
License update.
Little cleanup on setclass admin HTML
Reverting @cc72052943c8c01ed0c46dd9e438f8cb14301419 causing double consumption
Adding itemConsumeCount where necessary instead.
Merge branch 'ertheia' of https://github.com/L2J/L2J_DataPack into ertheia