Proper Fractions

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v.1.0.3 r.4 Added pink unit fractions in squared square.
v.1.0.2 r.3 Fixed layout details (August 2016)
v.1.0.1 r.2 Added tiny yellow dragging popup over square frame (july 2016)
v.1.0.0 r.1 first version. Tiny issue in radio buttons.(june 2016)