Fixes: 1) Corrected mismatched line references in translations; 2) Adjusted timestamps in locale files for accuracy;
Extra: Refactored and cleaned up unused or misplaced translation entries.
1) Userless orders will be merged on user's registration by their phone number and/or email. Added Viewset action "merge_recently_viewed" so recently viewed products may be stored on server's side.
2) Added comprehensive products' filtering by category(support for including subcategories)
Fixes: I18N
Fixes: 1) Adjust import order in `core/models.py` for better consistency;
Extra: Refactor formatting for better readability in `core/models.py`; Update `pyproject.toml` version to 2.6.2; Update compiled translation file `cs_CZ/LC_MESSAGES/django.mo`.
1) None;
Fixes:
1) Corrected formatting of "fuzzy" flags in multiple locale `.po` files for consistent syntax;
Extra:
1) No functional changes, only formatting updates in translation files;
