Partial Enphaderz Upgrade Screen setup

Partially built the Enphaderz Upgrade Screen setup method, which will
add the gui-upgrade information to the Upgrade Screen. I have completed
up to the Shield Amount, so will need to continue this for:  Shield
Regen Timeout, Shield Regen rate, health upgrade, lives upgrade, move
speed, and derp modifier.
Finished Enphaderz Upgrade Screen Setup

Finished the method that sets up the Upgrade Screen for Enphaderz.
Also, fixed a few of the equations.