Fixed Bug 8171

Char server could crash if attempting to log-in a character while map server hasn't completed the char >- <- map handshake
Special Thanks to memoryss
http://hercules.ws/board/tracker/issue-8171-char-server-crash-oninterifinitoninterifinitonce/

Signed-off-by: shennetsind <ind@henn.et>
Fixed invalid const.txt values for sc_burning/fear/cold/deep_sleep

Realized them while testing bug 7999.

Signed-off-by: shennetsind <ind@henn.et>
Fix Switching arrows no longer stops attacks. (rathena: a080117a74bd)
Using Hovering should off-set the effect of Magnetic Field (bug:8022)
Merge branch 'master' of github.com:HerculesWS/Hercules
Merge branch 'master' of https://github.com/HerculesWS/Hercules