Update prim-megamenu-en.php

Fixed issue with PHP code outside of <?php section
Update prim-megamenu-fr.php

Fixed issue of php code outside <?php section
Update prim-megamenu-fr.php

removed conflict section
Update head-doc.php

Fix Issue No82 https://github.com/wet-boew/wet-boew-php/issues/82 Resolved the languaged issue with IE8
Merge pull request #83 from crochefort/patch-1

@crochefort Looks good. Congratulations on your fist pull request.
fixed issue with footer menus that occurs if the menu variable is empty