Updates power armour files [Typepaths/Spanclasses/Colons]

Updates powerarmor.dm and powerarmorcomponents.dm to use FULL type paths
Replaces all \blue's and \red's with Span classes
Removes all but 1 Colon (The situation seems to REALLY require this colon)
Moves powerarmor to be a subclass of spacesuit because when on it basically IS a spacesuit.

Does NOT tick these files to compile, they do work however (compile and in-game tests).

Basically just updates all of it to be more coherent with our current Standards, Did this because I keep hearing talk of people wanting to use power armour so I thought I'd clean it.