message: Filter out empty strings when pasting IDs into the invite dialog
  Fixes
diff: @@ -801,7 +801,7 @@ export default class InviteDialog extends React.PureComponent {
  ];
  const toAdd = [];
  const failed = [];
  - const potentialAddresses = text.split(/[\s,]+/);
  + const potentialAddresses = text.split(/[\s,]+/).map(p => p.trim()).filter(p => !!p); // filter empty strings
  for (const address of potentialAddresses) {
  const member = possibleMembers.find(m => m.userId === address);
  if (member) {
  