Display Help text and utilize Nova Field markup for Validation Error message

[duckzland]

Use Case:

• Utilizing nova field method : ->help() for displaying help text.
• As a bonus, remove the old error text and fallback to nova field default error text markup.

Changes:

• Updated package.json to the latest possible version without breaking vue too much
• adapt field.js to compensate the new vue loading mechanism
• small bug fix to check for this.value to prevent this.value undefined error
• add the new nova default errors and show-help-text so value from ->help() can be displayed properly
• rebuild the dist js and css [empty for now, not sure if this is intended?]

EDIT

• added capability to disable some of the fields using method disabled

    ->disabled([ 'myoption_value1', 'my_option_value_2' ])

• added capability to make every checkboxes into readonly using nova field default readonly()

    ->readonly()