[Layout] Section that portray the rest of the contributors

[DAHuerta]

The layout should contain a section underneath the 'contributors spotlight' section that highlights the remaining contributors.

Description
At the top of the section should be a heading and text area - center-aligned
underneath the text area, contributors should be displayed with an image only in a grid style.
under the grid of photos should be a button to join the project-centered

Mockup

Screenshots