Authenticate user for all system actions

Wired in an additional check to verify user is authenticated before executing any code that makes changes to the system like saving settings or command execution.
This is a 2nd layer on top of the front end pages authenticating the user

Added in escaping of arguments for set date and change timezone just in case

scripts/config.php

@@ -1,8 +1,9 @@
 <?php
-if(file_exists('./scripts/common.php')){
+if (file_exists('./scripts/common.php')) {
 	include_once "./scripts/common.php";
-}else{
+} else {
 	include_once "./common.php";
+}
 
 //Parse the ini files to get the current config
 parseConfig();