Add defaults to resetFields call when creating new contact

[AsylumSeekersCentre]

…in webform_civicrm_forms.js, solving the bug of missing CiviCRM defaults.

Overview

When creating a new contact in a webform, defaults for Civi fields are not preserved, while defaults for non-Civi fields remain. This change preserves the defaults for Civi fields as well.

Before

This is our Test Defaults webform:

Here is what happens when selecting an existing Contact (all defaults are preserved, fields with saved data are updated):

Here is what happens when creating a new contact (Civi defaults are not preserved):

After

Now all defaults are preserved when creating a new Contact:

Technical Details

The defaults parameter of the resetFields function seems to be relatively new. It looks like it can be used when creating a new Contact, and adding it here doesn't appear to break anything else (but maybe there's a use case I'm not considering).

[colemanw]

@jitendrapurohit what do you think about this?

[jitendrapurohit]

@colemanw Confirm that this fixes the issue described above. This is a good change OR an extension of #102 which also fixes the reset of defaults on the new contact creation.