Fix vulnerability in handling _session argument of utils/save-prefs (#1489382)

Aleksander Machniak

2013-10-17 037af6890fe6fdb84a08d3c86083e847c90ec0ad

 program/js/tiny_mce/plugins/spellchecker/css/content.css

New file
@@ -0,0 +1 @@
.mceItemHiddenSpellWord {background:url(../img/wline.gif) repeat-x bottom left; cursor:default;}