i18n: Add ja translate for flavour/skin ux

New flavour/skin UX

Remove getting-started picture

preview_card fabricator has a removed attribute, status, and is no longer
functional.

add favourite confirmation modal

i18n: Add translate and fix problems

* Change the disclaimer below the sign up form

Change the disclaimer below the sign up form on the home page. The current text is linking to the /about/more page under "our terms of service" and to the /terms page under "privacy policy". This change intend to make the message more coherent.

Change l’avertissement en-dessous du formulaire d’inscription sur la page d’accueil. Le texte actuel redirige vers /about/more sous un lien intitulé "nos conditions d’utilisation" et vers /terms via "notre politique de confidentialité". Ce changement vise à rendre le message plus cohérent.

* Second take on the disclaimer

A new version of the disclaimer, based on feedback.

Une nouvelle version de l’avertissement, basé sur les premiers retours.

# Conflicts:
#	app/javascript/glitch/locales/ja.json

Internationalization for flavours and skins

* Strip leading & trailing spaces from account query

* Strip leading & trailing spaces from tag search

Fix misalignment between emoji sizes

ludicrously tiny but necessary typofix (wrong accent)

* filling missing strings

* Small changes

Better way of saying
+ removed 2 finals dots

* Corrections

* Corrections

Now with final point or without, just like the EN file

* Update oc.json