[UI][#43584647] style the feature tour better

Updated the tour button to be a secondary button.
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![](http://content.screencast.com/users/loganbfisher/folders/Jing/media/05cae50d-fb82-4966-8bcf-694cf9bd6879/00000371.png)

Selects the tab when it is on the enterprise tab.
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![](http://content.screencast.com/users/loganbfisher/folders/Jing/media/744afad9-5aca-42fd-b863-10ba48d0b058/00000370.png)