Update translator documentation.

L10n and i18n updates.
Break long lines in README before or at 80 characters.
Superfluous whitespace removed.

plugins/EmailAuthentication/EmailAuthenticationPlugin.php

@@ -57,6 +57,7 @@ class EmailAuthenticationPlugin extends Plugin
                             'author' => 'Craig Andrews',
                             'homepage' => 'http://status.net/wiki/Plugin:EmailAuthentication',
                             'rawdescription' =>
+                            // TRANS: Plugin description.
                             _m('The Email Authentication plugin allows users to login using their email address.'));
         return true;
     }