Adds 9 new pictures for use w/ about:newtab

[bsclifton]

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).

Fixes #6206

Auditors: @bradleyrichter

Two sample pictures:

[bradleyrichter]

the users are waiting for new photos... : )

[bsclifton]

@bbondy nudge, nudge

[bbondy]

looks nice