Update Design System

[chadstewart]

Currently the Design System for several components that should be dynamic is mostly static.

Need to update the Design System to that some components are more dynamic.

[chadstewart]

Went through the Design System in it's current state and looked at all the things that are needed to do. This will make it easier to track what needs to be done.

Atoms:

• Default Button: Add potential states and ability to change props
• Default Text: Add ability to change props
• Heading Text: Add ability to change props
• Icon: Add ability to change link and differentiate between link icon and non-link icon
• Link: Add ability to change props
• NavLink: Add ability to change props
• Text Input: Add potential states and ability to change props

Molecules:

• Newsletter Entry

Organisms:

• Newsletter Entries

Pages:

• Add Subscription page