Problem/Motivation
It's impossible to activate tour with really small viewport width (below 16.5em) because the tour toolbar tab is unclickable (floats below the first toolbar tab).
Proposed resolution
Float the item only if the toolbar is oriented OR when another toolbar tabs are floated as well.
Remaining tasks
Patch.
User interface changes
Tour toolbar tab will be similar to other tabs if viewport width is less than 16.5em.
API changes
Nothing.
Data model changes
Nothing.
Screenshot before patch
