Deinflect 確かめられる

```
It has been reported in Google Play that 確かめられる is not deinflected 
properly:
search for 確かめられる has no results, but it is in the inflections 
list)(update please!)

```

Original issue reported on code.google.com by `martin.v...@gmail.com` on 17 Feb 2015 at 12:58
