Increased height on laptop stand

JC21's laptop stand is pretty good, being portable and with a simple design.
I have added an part in the front to increase the basic height of the keyboard so that it's more comfortable to write on.
Besides that I modified so that it's larger.
The necessary copies for one side are the next:

• Support_front: 1
• Support_back: 1
• Pin: 2
• Base: 1
• Arm: 1

Upgrades planed:

• Fix tolerance problems in entry parts.
• Soften parts to make more comfortable.