[FAB-4599] better summary on introduction page
[FAB-4599] better summary on introduction page

Tweaked the landing page summary and put on the intro page.
Landing page will change post v1 to icon and search capabilities

[ci-skip]

Change-Id: Ie3b9c32efff70acb2f04b26c17e519f21085838e
Signed-off-by: Mark Parzygnat <eccc34d348f21499717d599ae55854ee6df735b9@us.ibm.com>

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