MDL-25736 TinyMce Spellchecker French issues

GoogleSpell checker already returns data un UTF8, so there's no need
to use utf8_encode (in fact, using it completely mangles the string).

All credit goes to David Quintal for finding the issue and proposing
the fix.

lib/editor/tinymce/tiny_mce/3.5.1.1/plugins/spellchecker/classes/GoogleSpell.php

@@ -39,7 +39,7 @@ class GoogleSpell extends SpellChecker {
 		$matches = $this->_getMatches($lang, $word);
 
 		if (count($matches) > 0)
-			$sug = explode("\t", utf8_encode($this->_unhtmlentities($matches[0][4])));
+			$sug = explode("\t", $this->_unhtmlentities($matches[0][4]));
 
 		// Remove empty
 		foreach ($sug as $item) {