Missing images, extra tabs, and unfinished text on landing page

[jweiss0]

Some fixes are needed to make the landing page more presentable:

• If there's no images to place in the spots with missing images, just remove them or comment them out for now
• There's also some extra tabs and/or they don't match up properly with the sections of the landing page that are currently there
• When a new tab is selected, the "Home" tab still stays highlighted

And maybe some more small things that I haven't noticed.
Low priority issue but definitely a good first issue to work on for newer team members.

[kushalsng]

hello, I would like to take this issue