fix #1038 Updating skin property for MultiAutoComplete widget

This commit updates the multiautocomplete property for skins.
feat #1040 Check the skin when normalizing it

This commit updates the version of atpackager, and updates
the configuration of the ATNormalizeSkin visitor to check
the skin properties while normalizing them. In case a skin
property is not correct (i.e. if it does not match the
corresponding bean in aria.widgets.AriaSkinBeans), the
build fails.

Close #1040