Merge pull request #1308 from shekenahglory/master

[FIX] validators: fix incorrect return value on rpMasterAddressExists
[FIX] trade.js: offerCreate - only update angular if not in phase

RT-1961 breaks on tx.on('error'...
[FIX] trade.js: set order mode to trade when user cancels request for secret
[FIX] trade.js: handle errors for offerCancel