Add "duplicates removed" text to articles results header

[jvine]

Add right-aligned text to the articles+ results count header row:

Exact duplicates have been removed

(To address a common user question/confusion.)

[jvine]

(Not sure this is the right solution, but the question still remains.)

[dbranchini]

Design - current site

Figma with specifications

Figma browser view with popover interaction

Screenshots

Design specifications

• Use the site's current styles/layout
• Primary heading is "About [x] articles+ results"
• Sub heading is "Duplicates removed" with an info icon that initiates a popover on click
• Popover background is Black 100 and the copy is "We search across a wide range of scholarly sources and remove duplicates from different providers. This may cause the number of displayed results to differ from the total found."

SW4.0 - future direction

Same with updated styles