QuickStatements v2 does not accept extra spaces next to tabs

[Lucas Werkmeister]

When Firefox copies out of a table (without Ctrl held for the proper “table” selection mode), it separates fields with a space and a tab character, instead of just a tab character. QuickStatements v1 accepts this variation, QuickStatements v2 doesn’t (an import simply results in no added commands, with no error message).