Adjust elements for a more reusable design

[adunn-ridestyler]

Issue

Throughout the portal, it has different design implementations. We should make a reusable and consistent design across portal pages. To do this, we will need to make some adjustments in the RideStyler UI.

Changes

• Adjust RideStyler UI btn-sm class to be a small button.
• Form select elements should be consistent across portal. Add blue down arrow to form-select class in UI.
• Make buttons have rounded corners on all sides
• Fix width of modal when it's inside another modal
• Fix Typeahead so that it always hides menu after item is select.