refactor(init): don't check loaded file count

It is quite pointless to check how many files loaded in the end
because we use file concatenation with preserved order for legacy files.

This closes #112.
refactor(i18n): change en translation for "ConfigOnServer"

Replace "Settings' storage on server" with "Remote settings backup".

This closes #113.
docs(README): say about distrs in releases

This closes #109.