Delete non-necessary / Unfinished

Some classes will be completely re-written and come back.
Mostly Renaming
"tick()" & "render()" are now merged to "logic()"
Removed a debugging Line.
Renaming
Outcommented.
"tick()" & "render()" now merged to "logic()"
"logic()" and renamed "Node" to "Array"
Node - Array thing
"logic()"
Removed icon
Added "FileLoader" mainly for Plugins
Loading external files!
Node - Array stuff
Groups for GUI
Array - Node and Groups for Arrays
Group and Added Scroll
Define Inputs

Input.define("action", Key.SPACE, Key.RETURN);
if (Input.down("action")) ...
Added ESCAPE as Key
New Maths stuff