This includes the work from https://pagure.io/fedora-docs/translations-scripts/pull-request/1 (which is the refactoring of all-src-to-pot.sh into all-src-to-pot.py) and adds a rework of src-to-pot.sh.

Done on src-to-pot.sh:

• add local storage of source repositories (folder name sucks, but it woks)
• add local storage of translated-source repositories
• add generic handling of languages
• bring support for file names with spaces
• removes debug attribute of po4a
• fix bug (antora.yml)
• applies the suggestions of spellcheck: https://www.shellcheck.net

To be tested:

• does the cache works correctly with the multiple docs using the same repository but multiple branches
• confirm the module deduction is correct

To be discussed:

• should we store source repositories in /output folder?
• should we write a python script instead of bash?
• related to the last point: what can of log do we would like?