We're not planning an unlock button
it's really not a good idea to leave your wallet unlocked
if you are looking to mint, run faircoin-qt -server
or add server=1 to your .conf
then from command line:
faircoind walletpassphrase YOUR_PASSPHRASE 99999999 true
I really never lock my wallet cause i work behind a well configured Linux firewall and i make sure my system is updated and patched when ever needed. If you are OS security inclined I think you can deal with an unlocked wallet.