[ticket/246] Fix misspellings in portal files

B3P-246

includes/functions.php

@@ -453,7 +453,7 @@ function generate_portal_pagination($base_url, $num_items, $per_page, $start_ite
 		break;
 
 		default:
-			// this shouldn't happend @todo: use trigger_error()
+			// this shouldn't happen but default to announcements
 			$pagination_type = 'ap';
 			$anker = '#a';
 	}

includes/functions_upload.php

@@ -322,7 +322,7 @@ class portal_upload
 
 	/**
 	* @author Michal Nazarewicz (from the php manual)
-	* Creates all non-existant directories in a path
+	* Creates all non-existent directories in a path
 	* @param $path - path to create
 	* @param $mode - CHMOD the new dir to these permissions
 	* @return bool

includes/trim_message/bbcodes.php

@@ -351,7 +351,7 @@ class phpbb_trim_message_bbcodes
 	}
 
 	/**
-	* Get the length of the content (substract code for smilie and url parsing)
+	* Get the length of the content (subtract code for smilie and url parsing)
 	*
 	* @param	string	$content	Message to get the content length from
 	*								Exp:     <markup>text<markup2>