Project should be able to specify what timer and timeline should be used

[einarf]

This is important since we can create multiple project configuration classes for a single project and we don't want to force users into making multiple settings modules for this.

[einarf]

I realized this is also somewhat related to #65.

Looks like it's a much better idea to move the timer, timeline and window initialization there.
Maybe with the exception of the window itself. Creating that before the project module is imported will ensure the OpenGL context is present.