Ensure empty text fragments are not created from white-spaces

[r-aamir]

For comparing jQuery behaviour, please check https://codepen.io/r-aamir/pen/yLzbgKr

[fabiospampinato]

Wait actually I've reverted the commit.

We have a test explicitly against this: https://github.com/fabiospampinato/cash/blob/736f09a1c6da4696313521ca2d221f7459001354/test/modules/utilities.js#L279

I don't remember the reason for this, but I'm going to trust past myself that there was a good reason for it.

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jQuery does indeed preserve the whitespace when executing something like $.parseHTML ( ' <b>foo</b>' ), so the fix should be somewhere else.