added changes for cybox:Properties to show any constraints at the cybox:Properties level (examples include whether an ip address is ipv4 or ipv6)

fixed formatting problem that showed up when constraints are displayed for cybox:Properties sub-elements where there was an ignored attribute (usually xsi:type) and that caused the open bracket not to print (and it would be directly joined to the element name with no separating space).
left align the table.grid th (table headers)