Implement group mentor, leadership exp sharing (SoF+ only)

Currently only works in normal groups
Some decisions: the EXP will be rounded in the favor of the group leader
No idea how live actually handles it.

utils/patches/patch_RoF.conf

@@ -500,6 +500,7 @@ OP_GroupRoles=0x047c
 OP_GroupMakeLeader=0x4129
 OP_DoGroupLeadershipAbility=0x17d7
 OP_GroupLeadershipAAUpdate=0x6567
+OP_GroupMentor=0x56DB
 
 # LFG/LFP Opcodes
 OP_LFGCommand=0x4463

utils/patches/patch_SoD.conf

@@ -486,6 +486,7 @@ OP_GroupDisbandOther=0x162d
 OP_GroupLeaderChange=0x7545
 OP_GroupRoles=0x6b67
 OP_GroupMakeLeader=0x6087
+OP_GroupMentor=0x1224
 # LFG/LFP Opcodes
 OP_LFGCommand=0x3288				# C
 OP_LFGGetMatchesRequest=0x5613		# C

utils/patches/patch_SoF.conf

@@ -452,6 +452,7 @@ OP_GroupDelete=0x0000			#
 OP_CancelInvite=0x596C			#Trevius 03/02/09
 OP_GroupFollow2=0x59D4			#Xinu 02/20/09
 OP_GroupInvite2=0x07F6			#Xinu 02/20/09
+OP_GroupMentor=0x9EF3
 
 #LFG/LFP Opcodes
 OP_LFGCommand=0x5D81			#Trevius 01/16/09

utils/patches/patch_Underfoot.conf

@@ -489,6 +489,7 @@ OP_GroupDisbandOther=0x49f6			# C
 OP_GroupLeaderChange=0x0c33			# C
 OP_GroupRoles=0x116d				# C
 OP_GroupMakeLeader=0x5851
+OP_GroupMentor=0x292f
 
 # LFG/LFP Opcodes
 OP_LFGCommand=0x2c38				# C

utils/sql/git/required/2014_10_18_group_mentor.sql

@@ -0,0 +1,2 @@
+ALTER TABLE `group_leaders` ADD `mentoree` VARCHAR(64) NOT NULL;
+ALTER TABLE `group_leaders` ADD `mentor_percent` INT(4) DEFAULT 0 NOT NULL;