Minor fixes to statement, services and internal things

Many misc updates

application/classes/lnapp/sort.php

@@ -22,9 +22,9 @@ class lnApp_Sort {
 	 */
 	public static function MAsort(&$data,$sortby,$rev=0) {
 		// if the array to sort is null or empty, or our sortby is bad
-		if (! preg_match('/^[a-zA-Z0-9_]+(\([a-zA-Z0-9_,]*\))?$/',$sortby) || ! $data)
+		if (! preg_match('/^([a-zA-Z0-9_]+(\([a-zA-Z0-9_,]*\)(->[a-zA-Z0-9])?)?,?)+$/',$sortby) || ! $data)
 			return;
-	
+
 		$code = '$c=0;';
 
 		foreach (explode(',',$sortby) as $key) {
@@ -83,7 +83,7 @@ class lnApp_Sort {
 		$code .= 'return $c;';
 
 		$result = create_function('$a, $b',$code);
-	
+
 		uasort($data,$result);
 	}
 }