Fixes bard song assassin cross of sunset. Thanks to Juvia

Corrected skill level/status formula and Musical Lesson bonus
Merge pull request #334 from csnv/somefixes

Fixes bard song assassin cross of sunset. Thanks to Juvia
Fixes Dancer' song Service for you

Corrected Max SP and Regeneration bonus from Dancing lesson. Thanks to Kyeme.

Bug report 7914 http://hercules.ws/board/tracker/issue-7914-gypsy-kiss-service-for-you/
• Fixed some rental items both PRE-RENEWAL and RENEWAL
• Added missing item scripts in PRE-RENEWAL.

Signed-off-by: Jedzkie <jedzkie13@rocketmail.com>
Merge pull request #337 from Jedzkie/master

• Fixed some rental items both PRE-RENEWAL and RENEWAL
ItemDB SQL Sync

Signed-off-by: HerculesWSAPI <Hercules@efficiently.awesome>
Merge pull request #336 from csnv/somefixes

Fixes Dancer' song Service for you
Bug report 7914 http://hercules.ws/board/tracker/issue-7914-gypsy-kiss-service-for-you/
Merge branch 'master' of https://github.com/HerculesWS/Hercules