message: invert boolean operation for readability and add comment
diff: @@ -523,8 +523,9 @@ module.exports = React.createClass({
  selectedAddresses[addressType].add(address);
  });
  + // Filter out any addresses in the above already selected addresses (matching both type and address)
  const filteredSuggestedList = this.state.suggestedList.filter(({address, addressType}) => {
  - return !selectedAddresses[addressType] || !selectedAddresses[addressType].has(address);
  + return !(selectedAddresses[addressType] && selectedAddresses[addressType].has(address));
  });
  const query = [];
  