Clean up level0.cpp and return proper errormessages (fix by ogeraisi)

Closes issue #286

--HG--
branch : trunk

sql/base/world_database.sql

@@ -14636,7 +14636,7 @@ INSERT INTO `trinity_string` (`entry`,`content_default`,`content_loc1`,`content_
 (24, 'You used it recently.', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
 (25, 'Password not changed (unknown error)!', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
 (26, 'The password was changed', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
-(27, 'The new passwords do not match or the old password is wrong', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
+(27, 'The old password is wrong', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
 (28, 'Your account is now locked.', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
 (29, 'Your account is now unlocked.', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
 (30, ', rank ', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
@@ -14671,6 +14671,7 @@ INSERT INTO `trinity_string` (`entry`,`content_default`,`content_loc1`,`content_
 (59, 'Using creature EventAI: %s', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
 (60, 'Online players: %u (max: %u)', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
 (61, 'Up to %u expansion allowed now.', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
+(62, 'One on more parameters have incorrect values', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
 (100, 'Global notify: ', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
 (101, 'Map: %u (%s) Zone: %u (%s) Area: %u (%s) Phase: %u\nX: %f Y: %f Z: %f Orientation: %f\ngrid[%u,%u]cell[%u,%u] InstanceID: %u\n ZoneX: %f ZoneY: %f\nGroundZ: %f FloorZ: %f Have height data (Map: %u VMap: %u)', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),
 (102, '%s is already being teleported.', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL),