Allow comma instead of dot as decimal separator to support European n…#6

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laslingerland wants to merge 2 commits intojoshuadeleon:masterfrom

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Commits on Feb 16, 2016

Allow comma instead of dot as decimal separator to support European notation
laslingerland
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Commits on Feb 17, 2016

(dis)allow copying and pasting into the numeric input element. Checks for ctrl-c/ctrl-ins and ctrl-v/shift-ins.
laslingerland
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