Call to actions and highlight page

# Calls to action

We added a flexible call to action component that can have various states:

• Generic - Has title, snippet and link
• icon - As generic, but can select from list of icons, including arrow, person and calendar
• image - As generic but has an image.

# Highlight current page

Added indicator on what the current page is in top nav.

# Highlight current page in nav screenshot

# Call to action generic screenshot

# Call to action with icon screenshot

# Call to action with image screenshot