[ENH] Preprocess - Use language from Corpus

[PrimozGodec]

Description of changes

Set language combo boxes for the language from the corpus.

Additionally, this PR changes the UDPIPE combo box to keep the same language when one wants to set language to language unavailable in UDPIPE. Previously, it was always reset to English.

Includes

• [X] Code changes
• [X] Tests
• [ ] Documentation

[codecov-commenter]

Codecov Report

Merging #963 (d22d1c5) into master (64eee89) will decrease coverage by 0.06%. The diff coverage is 87.50%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #963      +/-   ##
==========================================
- Coverage   82.29%   82.23%   -0.06%     
==========================================
  Files          93       93              
  Lines       12448    12481      +33     
  Branches     1699     1710      +11     
==========================================
+ Hits        10244    10264      +20     
- Misses       1893     1902       +9     
- Partials      311      315       +4     

[PrimozGodec]

/rebase

[PrimozGodec]

/rebase

[PrimozGodec]

This draft is waiting for #1080 to be merged

[PrimozGodec]

@VesnaT, I reimplemented the logic. It is ready for review now.