[HERCULES] Fixes songs refresh bug, updates BA_ASSASSINCROSS
- Fixes bug 7125: http://hercules.ws/board/tracker/issue-7125-song-refresh/ (Rathena fix)
- Updated BA_ASSASSINCROSS ASPD Renewal Formula according to latest tests
- Added 'Skill failed' message to Devotion
https://github.com/HerculesWS/Hercules/commit/d19310af9540db177bb35116d19dd1c3a2afff14