Create motion category dropdown / popup

[rapee]

What To Do

Create dropdown to choose motion category at /motions/category/:category_id.

Related Issues

• #162

Design

Mobile

• https://projects.invisionapp.com/share/7HU7PWOYAQM#/screens/409314656
• https://projects.invisionapp.com/share/7HU7PWOYAQM#/screens/411347693

Desktop

• https://projects.invisionapp.com/share/7HU7PWOYAQM#/screens/411347691
• https://projects.invisionapp.com/share/7HU7PWOYAQM#/screens/411347692
• https://projects.invisionapp.com/share/7HU7PWOYAQM#/screens/408750961