feat: Make merge_javascript relative to file

This patch makes the merge_javascript script relative to the location of
the file and not the location that the script was called from. Ensures
the script will always run as intended regardless of where you ran the
script from.

code/web/interface/themes/responsive/js/merge_javascript.php

@@ -1,16 +1,16 @@
 <?php
 header('Content-type: text/plain');
 date_default_timezone_set('America/Denver');
-$mergeListFile = fopen("./javascript_files.txt", 'r');
-$mergedFile = fopen("./aspen.js", 'w');
+$mergeListFile = fopen(__DIR__ . "/javascript_files.txt", 'r');
+$mergedFile = fopen(__DIR__ . "/aspen.js", 'w');
 while (($fileToMerge = fgets($mergeListFile)) !== false){
 	$fileToMerge = trim($fileToMerge);
 	if (strpos($fileToMerge, '#') !== 0){
-		if (file_exists($fileToMerge)){
-			fwrite($mergedFile, file_get_contents($fileToMerge, true));
+	    if (file_exists(__DIR__ . '/' . $fileToMerge)){
+		    fwrite($mergedFile, file_get_contents(__DIR__ . '/' . $fileToMerge, true));
 			fwrite($mergedFile, "\r\n");
 		}else{
-			echo("$fileToMerge does not exist\r\n");
+		    echo("$fileToMerge does not exist\r\n");
 		}
 	}
 }