datepicker: add yearRangeReverse property sort year in reverse order

[k2s]

This add yearRangeReverse property to date picker to sort year range in reverse order

Types of changes

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to change).

Checklist:

• I have read the CONTRIBUTING document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[DanielRuf]

Not sure why arr.concat is used here. You can probably leave the old code untouched and use one line with this:

if(opts.yearRangeReverse) {
  arr.reverse();
}

Which will reverse the array elements in place.

[DanielRuf]

You might also want to add it as default at the top.

[k2s]

@DanielRuf I fixed the overhead.
Pls. what do you mean by add it as default at the top ?

[DanielRuf]

See https://github.com/Dogfalo/materialize/blob/v1-dev/js/datepicker.js#L4, the defaults are readable and visible when you output a component instance on the console.

[DanielRuf]

Merged at materializecss@5a4c33c (includes the original commits at https://github.com/materializecss/materialize/commits/v1-dev).