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
Removing large space
Merge pull request #342 from csnv/somefixes

Fixes songs refresh bug, updates BA_ASSASSINCROSS