Spellchecking dictionaries in LyX 2.4 installer

[Yuriy Skalko]

> I might be wrong but I thought that windows installer used to have list of 
> languages that you could select to install.
> If that's the case wouldn't be trivial to just download dicts from our site in 
> case use ask for specific lanugage?
> Or to have just single checkbox like 'Install comprehensive language pack' 
> which would pull all 300 mb in archive we prepare on ftp.
> 
> Pavel

Now installer automatically selects OS language for installer UI. But 
user should scroll through big language list and manually select 
dictionary for the same language. If user skips this (assuming that if 
installer is in right language then LyX will have full support for this 
language too) and later finds that spellchecking is not working in 
installed LyX, then only manual downloading of dict and putting it into 
right directory is available. I assume that many users will just miss 
spellchecking feature in this case.

Also current installer requires internet connection even for very common 
languages (besides EN,FR,ES,DE that are builtin).


Yuriy