Comma-separated list view, extra validators

* Arrays with strings or numerics will now show as a comma separated list.
To disable, override JCDefaultContentView::isList

* JCDefaultObjContainer now renders errors in non-object values
* Two new validators - stringToList and uniqueSortStrList

Change-Id: I7043df4c1d473bfa96898068d02c9c6685ca6920
Merge "Comma-separated list view, extra validators"