themes lib MDL-24895 Multiple fixes to better handle overflow.

Major tasks undertaken in this patch:
* New format_text argument, overflowdiv.
* New page layout Report.
* Review of all format_text calls.
* Added support for the report layout to all themes.
* Changed forum post display from tables to divs.

user/profile.php

@@ -214,7 +214,8 @@ if ($user->description && !isset($hiddenfields['description'])) {
         echo get_string('profilenotshown', 'moodle');
     } else {
         $user->description = file_rewrite_pluginfile_urls($user->description, 'pluginfile.php', $usercontext->id, 'user', 'profile', null);
-        echo format_text($user->description, $user->descriptionformat);
+        $options = array('overflowdiv'=>true);
+        echo format_text($user->description, $user->descriptionformat, $options);
     }
 }
 echo '</div>';