Fix compatibilité avec le futur Firefox 40

See https://developer.mozilla.org/en-US/Firefox/Releases/40/Site_Compatibility .
Removed text-decoration to avoid problems.

Author: nico3333fr

sass/rocssti-en/03-util-typo-fix.scss

@@ -132,6 +132,7 @@ table {
 abbr[title] {
   border-bottom: dotted 1px;
   cursor: help;
+  text-decoration: none;
   /* color inherited from text */
 }