[fix] Avoid to re-add an existing wallet. Fix children wallet id generation (make sure id are unique)

[fix] Replace new Date().getTime() by Date.now() - Also use moment().utc().unix() for all unix time

[fix] Add 1 second, because when membership begins in a block with DU, the DU is not received - Fix #736

[fix] Wot identity: display given certification stock (on small screen)

[fix] I18n Secondary wallet => My wallets

[fix] Try to whow titlebar on desktop, when opening a link