add ID to upload form and check if ID exist to avoid loading invalid...

add ID to upload form and check if ID exist to avoid loading invalid javascript code for read-only views.

apps/files/js/files.js

@@ -199,7 +199,8 @@ $(document).ready(function() {
 	$(document).bind('drop dragover', function (e) {
 			e.preventDefault(); // prevent browser from doing anything, if file isn't dropped in dropZone
 	});
-
+	 
+	if ( document.getElementById("data-upload-form") ) {
 	$(function() {
 		$('.file_upload_start').fileupload({
 			dropZone: $('#content'), // restrict dropZone to content div
@@ -413,7 +414,7 @@ $(document).ready(function() {
 			}
 		})
 	});
-
+	}
 	$.assocArraySize = function(obj) {
 		// http://stackoverflow.com/a/6700/11236
 		var size = 0, key;

apps/files/templates/index.php

@@ -12,7 +12,7 @@
 				</ul>
 			</div>
 			<div class="file_upload_wrapper svg">
-				<form data-upload-id='1' class="file_upload_form" action="<?php echo OCP\Util::linkTo('files', 'ajax/upload.php'); ?>" method="post" enctype="multipart/form-data" target="file_upload_target_1">
+				<form data-upload-id='1' id="data-upload-form" class="file_upload_form" action="<?php echo OCP\Util::linkTo('files', 'ajax/upload.php'); ?>" method="post" enctype="multipart/form-data" target="file_upload_target_1">
 					<input type="hidden" name="MAX_FILE_SIZE" value="<?php echo $_['uploadMaxFilesize'] ?>" id="max_upload">
 					<input type="hidden" class="max_human_file_size" value="(max <?php echo $_['uploadMaxHumanFilesize']; ?>)">
 					<input type="hidden" name="dir" value="<?php echo $_['dir'] ?>" id="dir">