Project 2 - 2B - layout changes and enhancements

This post is mainly just to update the layout status of my app.
The challenges icon has been moved into the center, as this is the 'center' focus for the app, to challenge others.

I have also decided on a font to keep consistent throughout my app and I decided turn the top icon to a grey light grey colour to clearly show what page you are on. A background gradient was also added.