Add "New app" as a "Transparency" score for new wallets with a short track record

There seems to be a few interesting wallets (Aegis, Breadwallet, Ciphrex) which may be good choices for the user. However, many of them have been released only more recently.

This pull request adds a "Transparency" score text which warns the user that such wallets still don't have a very long track record, in order to find a good compromise that would allow us to list them while being transparent about the few public testing / review these wallets may have received yet.