#48 Weird names for key signatures in wizard

[thSoft]

The names of key signatures in the Document Setup Wizard are incorrect (at least in Hungarian locale, I couldn't test on others).
* The 's' postfix is duplicated.
* 'hes' should be either 'bes' or 'b'.
* Optionally, aes and ees may be contracted to as and es.

[thSoft]