Update src/lib/theme/components.js

[kieckhafer]

Resolves #389
Impact: major
Type: bugfix

Issue

App is crashing when logging in due to an un-exported component.

Solution

Export the component correctly in the app components context.

Breaking changes

None.

Testing

• Make sure you can login to the starterkit without the app crashing / throwing the following error

Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. 
You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

[rosshadden]

I blame solar flares.