Language selection button flag mismatch

[DanikVitek]

Hi there.
The issue is that some flags, used to indicate a language, don't match the language being selected. For instance, the russian language is selected, when Ukrainian flag is clicked. This needs to be fixed. Either add the Ukrainian language as an actual option, or indicate the language with the russian flag.

Some other flags might also be incorrectly used, so a simpler and (IMHO) better option is to indicate the language using the corresponding language code:

• en for English
• es for Spanish
• ru for russian
• etc.

This would remove confusion in regard to different countries having a language as their national language. For example, currently the flag of Canada is used to indicate English in one part of the site, and then on the downloads page the flag of UK is used instead.