Console extra Proxy and JX improvements
Console extra Proxy and JX improvements

* Tolerate Proxy setup errors in case Proxy throws (= disabled).

* Fix bug in JX encoding error handling.  Incorrect quote marks caused
  value to be number coerced (+v) rather than string coerced (''+v).

markand/duktape,jmptrader/duktape,jmptrader/duktape,markand/duktape,svaarala/duktape,harold-b/duktape,svaarala/duktape,harold-b/duktape,harold-b/duktape,harold-b/duktape,svaarala/duktape,jmptrader/duktape,svaarala/duktape,markand/duktape,harold-b/duktape,svaarala/duktape,jmptrader/duktape,markand/duktape,jmptrader/duktape,markand/duktape,harold-b/duktape,markand/duktape,harold-b/duktape,harold-b/duktape,markand/duktape,jmptrader/duktape,markand/duktape,jmptrader/duktape,svaarala/duktape,jmptrader/duktape,svaarala/duktape,harold-b/duktape,harold-b/duktape,markand/duktape,svaarala/duktape,jmptrader/duktape,jmptrader/duktape,markand/duktape,svaarala/duktape