Datepicker w/ Moment parseDate parsing strings results in good date object not Invalid Date

[swilliamset]

fixes #1906

Code made two attempts to parse but passed the failed result from the first attempt to the second attempt instead of the raw date string.

[futuremint]

Looks good to me! Thanks for adding the clarifying name to the tryMomentParseAll function.

[swilliamset]

@futuremint please sanity check now that i moved the dist build before the test.

[futuremint]

Yep, should be find as long as browserify:commonjs is still first (its also required for the tests to run)