Added random image provider URL for templates#53

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Emasoft wants to merge 2 commits intotwintechs:masterfrom

Emasoft:random_image_provider

Commits on Jul 31, 2016

Added random image provider URL for templates ( from
EmanueleSabetta
committed

Commits on Aug 3, 2016

Added a new menu entry ("FastCellComplexSVG")
EmanueleSabetta
committed