fixed a few typos in sql-admin-manager and updated the immunity phrase

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%401411

plugins/sql-admin-manager.sp

@@ -660,6 +660,7 @@ public Action:Command_AddGroup(client, args)
 	Format(query, 
 		sizeof(query),
 		"INSERT INTO sm_groups (flags, name, immunity_level) VALUES ('%s', '%s', '%d')",
+		safe_name,
 		safe_flags,
 		immunity);
 	

translations/sqladmins.phrases.txt

@@ -7,7 +7,7 @@
 
 	"Invalid immunity"
 	{
-		"en"		"Immunity must be 'none', 'default', or 'global'."
+		"en"		"Immunity must be a positive integer."
 	}
 
 	"SQL Admin already exists"