Make dropdowns close on focus exit (blur) #175

[oconnelc]

Description

All of the pulldowns at the top of the screen will now exit when moved off.

Motivation and Context

It was annoying having the drop downs get stuck. Now they behave.

How has this been tested?

Tested in browser

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[DaveSauce]

Thanks @oconnelc!