Ensure createFromInputFallback is called in all cases

Every case where user supplied input ends up into the Date constructor, without
us knowing what would be the result, call createFromInputFallback so the
function can be deprecated, overwritten and replaced in future versions.
Add moment.suppressDeprecationWarnings
Merge pull request #1604 from ichernev/fix-input-fallback

Ensure createFromInputFallback is called in all cases