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Merge pull request #52 from InGo-LLP/quick_fix

Ensure that the placeholder color is set [relates to #81197206]
Fix color for placeholders vs. typed text.

Also:
* Update dependencies
* Always run autoprefixer
Create the inverted version of the login widget.

This is being created separately because simply using a CSS override sheet
proved too difficult.  When 0.6 lands we can make this a parameter.
Update the version.
Move sub-header to match specification.