l10n Occitan (#5586)

* Update OC: time format

Correction for time format according to: https://opinion.jornalet.com/conselh-linguistic-de-jornalet/blog/2379/la-notacion-oraria-en-occitan
Harmonisation words in menu and confirmation windows

* Update for unlisted custum emoji + #5577

* correction subjonctiu

It's either siasque or siague

* Corrections

Any : qual que, in two words, else it means "some".
And "siasque" with S even if I don't pronounce it at all.

* Update oc.json