layerJS scope: make document and window as closure

[kennytordeur]

when using jsdom in node environments it may be helpful to have document and window non-global

Originally created at 2016-05-23 19:22:07+00:00 (UTC) by thomashandorf as a(n) major issue.

[thomashandorf]

this is solved differently for nodejs
besides: the parse document now gives the document into the view constructors so these are used inside layerjs