Revert PHP > 5.4 syntax

Author: craigdietrich

system/application/libraries/File_Upload.php

@@ -105,7 +105,8 @@ private function convertPHPSizeToBytes($sSize)  {  // http://stackoverflow.com/q
 		private function getMaximumFileUploadSize()  {  // http://stackoverflow.com/questions/13076480/php-get-actual-maximum-upload-size
     		$size = min($this->convertPHPSizeToBytes(ini_get('post_max_size')), $this->convertPHPSizeToBytes(ini_get('upload_max_filesize')));
     		$base = log($size) / log(1024);
-			$suffix = array("", "k", "M", "G", "T")[floor($base)];
+			$suffixes = array("", "k", "M", "G", "T");
+			$suffix = $suffixes[floor($base)];
 			return pow(1024, $base - floor($base)) . $suffix;
 		}
 

system/application/views/modules/cover/login.php

@@ -21,7 +21,7 @@
 	} elseif (!empty($book) && $user_level!='Author') {
 		// echo '<span class="disabled_link">'.lang('login.manage_content').'</span>'."\n";
 	} else {
-		echo '<a href="'.confirm_slash(base_url()).'system/dashboard?book_id='.@$book->book_id.'&zone=style#tabs-style">'.lang('login.manage_content').'</a> | <a href="'.confirm_slash(base_url()).'">'.lang('login.index').'</a>'.' | <a href="http://scalar.usc.edu/works/guide">'.lang('login.guide').'</a>';
+		echo '<a href="'.confirm_slash(base_url()).'system/dashboard?book_id='.((isset($book->book_id))?$book->book_id:'').'&zone=style#tabs-style">'.lang('login.manage_content').'</a> | <a href="'.confirm_slash(base_url()).'">'.lang('login.index').'</a>'.' | <a href="http://scalar.usc.edu/works/guide">'.lang('login.guide').'</a>';
 	}
 // Not logged in
 else: