Char_serv upd

-Fix bugreport:7970 (char deletion for 2013+ client, thx ivanyan)
-Fix bugreport:8087 (guild storage broken by bound_item)
Skill_colldown

Move skillcooldown from ram saving to sql saving.
This will fix multimap skillcooldown and avoind increasing ram by
offline users.
ReqItems and Various Fixs

-Add requiered equiped item to cast in skill_require_db.
-Fix SC_ASH not always giving 50% chance failing, wrong emplacement
-Fix SC_STYLE_CHANGE not being relaunch when eleanor resurected.
-Fix cardfix for target not being reseted and therefor using same value
as caster.
-Move ADJUST_SKILL_DAMAGE in battle_calc_weapon_final_atk_modifiers
(since it shuold alter the final dammage just like it do for magic and
misc)
-Add battle_do_reflect and skill_do_copy small function to encapsulate
code.
-Upd channel_clean and channel_delete to simplify autodelete case for
public chans
-Fix SC_FEINTBOMB that had a fixed blewcount and not 3*skilllv
-Fix SC_VACUUM_EXTREME where some scenario was setting scs_nomove to -1
and therefor blocking char forever.
-Fix SC_STRIKING where val1 was overwritten for sp cast but also used as
skilllv for critical bonus...
-Upd SC_GN_CARTBOOST, should be ending be DECREASE_AGI
-Upd SC_MAGNETICFIELD should be endend when getting earth dmg or
quagmire
-Mv SC_WARMER, SC_WHITEIMPRISON, SC_FREEZING ending other status section
in proper area.
Add EP 14.3 Part 2 3rd Job Skills

thx to brAthena, Herc, Cydh.
Merge branch 'master' of https://github.com/rathena/rathena