I asked Hash Engineering about this, he states that he is hopeful that Andreas Schildbach will add it to the Bitcoin Wallet- Hopefully soon- Because Quarks Wallet is based on the Schildbach wallets coding/features, we will have to wait a bit on this one. Currently there is no Android wallet app with this feature. .
Maybe it's because of that-there were some other times the site went down and it would be no surprise if they removed it so their server won't crash if there has been an increase in the volume traded. This seems like a possible explanation.
quark is going some where!!!! and not just the moon, i have never seen a community band together the way it has, it's crazy!!