Fix/container size#284

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gerardocastro wants to merge 8 commits intosconsult:masterfrom

nguyenmv2:fix/containerSize

Commits on Apr 3, 2017

Ensure there's no existing event listener assigned to the form object
nguyenmv2
committed

Commits on Apr 4, 2017

Commits on Mar 29, 2018

add containerSize option instead of getting it with js
gerardocastro
committed