[wp-polyglots] Add language to Spellchecker button

[Pavel Hejn]

Hi,

there are 11 languages available for spellchecking in TinyMCE editor in WordPress.
This technology uses Google Spell and there are 27 languages available, I guess.
For example Czech language is also available, but is there any possibility to set it in WordPress (and TinyMCE)?
Any way to make a plugin or something else?
It would be very good for Czech users to use this hidden functionality.
Thank you for your help...

Pavel