Load user profile tabs on demand

Right now every tabs of the user profile are loaded whenever a user profile gets accessed. This is not good for several reasons:
1. it's making bad interactions because multiple different stuff are loaded at once in the DOM even if not displayed, and it can cause hard to debug test problems
2. it's also bad for perf because the page is heavy to load and even if we could consider that the page is loaded once for all when browsing on tabs it's not entirely true as editing user pref lead to reloading the page

So we should load tabs on demand only.