Add content to About Page

[MosesSupposes]

We need to flesh this page out more. It needs more details and style improvements such as:

• Fix the margins, some content is too stretched, some bleeds out the border.
• The text needs to be centered.
• The font size needs to be smaller (consult the style guide)
• Add more featured apps.
• Make the featured apps sideways scrollable.
• Make the featured app link clickable (it should navigate you to the project's Github repo).