little update problem

Tried to update to version 1.0.7 and got the following error:

```php
Notice: Undefined index: ignoredTemplates in /../site/modules/TemplateTwigReplace/TemplateTwigReplace.module on line 194
```

The problem is that I could not submit the settings and there is no entry for the new config option *ignoredTemplates* atm.  The second error message occurs because the entry *admin* is not saved as well so I got the following message (it tries to render the admin template using twig):

```php
paths->adminTemplates . 'controller.php');
```

I added a simple if-condition and everything works as expected.