Misc fixes

• Minor misc transcript fixes

• Bugfix to combined_html_generator.py and 'generate' manual pipeline if there was no 'lang' input; added combined html function to generate it next to svg's in 'generate' pipeline.
  This pipeline was tested on Gitlab instance of my friend. (Took about 10 tries to get it right.)
  I also reduced pipeline expire time (job execution timeout). Due to wrong understanding of its function in 0ac3ab06

There is a huge update for transcript documentation, but it is somehow still in WIP/proofing phase.