Fixed map crash on load when lowering MAX_LEVEL - Fixes bugreport:7783
Added Kagerou and Oboro to Ninja HP/SP table and Ex. Super Novice to Novice HP/SP table as we had no values for them - Fixes bugreport:7782
Fixed a wrong Gunslinger HP table value causing a warning
Warnings on HP/SP tables will only occur when the database values are less than previous levels.  Formula built values will not give warnings.

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@17394 54d463be-8e91-2dee-dedb-b68131a5f0ec