Fix 2 errors in LocalSettings

PHP Notice:  Undefined variable: wmgUserCharInsert in
/usr/share/nginx/.orain.org/w/LocalSettings.php on line 1266
PHP Notice:  Undefined variable: wmgUseEchoPack in
/usr/share/nginx/.orain.org/w/LocalSettings.php on line 1274

I think the blame here falls with the following commit
https://github.com/Orain/ansible-playbook/commit/e665993ffbf8b1ee03098972b9a6995508b94bd7