We can grab all counts in single query, there is no need to count
everything separately.

There usually should not be existing entry and get_or_create is too
expensive then - it needs extra select to figure out that there is
nothing. So be rather optimistic and recover from error when needed.

This becomes expensive when using weblate:// links.

Currently translated at 100.0% (870 of 870)

Currently translated at 100.0% (869 of 869)

Currently translated at 100.0% (875 of 875)

Currently translated at 100.0% (875 of 875)

Currently translated at 99.5% (872 of 876)

Currently translated at 98.9% (867 of 877)

Currently translated at 98.7% (866 of 877)

Currently translated at 100.0% (872 of 872)

Currently translated at 100.0% (876 of 876)

Currently translated at 100.0% (876 of 876)

Currently translated at 100.0% (873 of 873)

Currently translated at 100.0% (870 of 870)