Change IntegerType::scale default value to 0#9549

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BenoitDuffez wants to merge 2 commits intosymfony:3.4from

BenoitDuffez:BenoitDuffez-patch-fix-reference-forms-types-integer-scale-zero

Commits on Apr 4, 2018

set default scale value to 0
BenoitDuffez
authored
reverted the edit on scale.rst; removed inclusion in integer.rst
Benoit Duffez
committed