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Add component and strings for parent info screen.
Move edu-login-button position CSS to shared CSS file.
Update template to allow scrollable content.
Screenshot: http://screen/ty41uTYuCQO

Bug: 1043108
Change-Id: Iea78f81e8469a41ca17357e891355676bf57d8a7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2010963Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: Kush Sinha <sinhak@chromium.org>
Commit-Queue: Anastasiia Nikolaienko <anastasiian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#753548}