Adjusted Crush Strike duration (fixes #1900)

* Lowered Crush Strike's duration from 3 minutes to 30 seconds.
Thanks to @zackdreaver!

db/pre-re/skill_cast_db.txt

@@ -1088,7 +1088,7 @@
 //-- RK_MILLENNIUMSHIELD
 2011,0,1000,0,180000,60000,0
 //-- RK_CRUSHSTRIKE
-2012,0,0,0,180000,30000,0
+2012,0,0,0,30000,30000,0
 //-- RK_REFRESH
 2013,0,0,0,60000,120000,0
 //-- RK_GIANTGROWTH

db/re/skill_cast_db.txt

@@ -1103,7 +1103,7 @@
 //-- RK_MILLENNIUMSHIELD
 2011,0,1000,0,180000,60000,0,-1
 //-- RK_CRUSHSTRIKE
-2012,0,0,0,180000,30000,0,1000
+2012,0,0,0,30000,30000,0,1000
 //-- RK_REFRESH
 2013,0,0,0,60000,120000,0,1000
 //-- RK_GIANTGROWTH