Create Section for Explorer Page

[AlexCatarino]

Expected Behavior

The documentation covers the Explorer product: https://www.quantconnect.com/explore

Actual Behavior

Not documented.

Checklist

• [x] I have completely filled out this template
• [x] I have confirmed that this issue exists on the current master branch
• [x] I have confirmed that this is not a duplicate issue by searching issues

[AlexCatarino]

This issue can be closed if we replace this page View All Live Projects with an image of the explorer page.