* Add tests for ImportWithSeedPhrase#parseSeedPhrase
* Handle importing whitespace-only seed phrases
Fixes#6694
This changeset fixes our parsing of seed phrases during import to handle the
case where a user tries to import a seed phrase that consists solely of whitespace.
We no longer produce an error and instead treat it as an incorrect seed phrase.
* Handle importing more invalid seed phrases
Whymarrh Whitby
Chi Kei Chan
Dan Miller