connect/lib/middleware/json: fix option redefine; remove strict var

Signed-off-by: Oleg Verych <olecom@gmail.com>
connect/lib/middleware/json: assign `req.json` after content-type check

by default there must be no `req.json`
thus by checking it request content type has value

Signed-off-by: Oleg Verych <olecom@gmail.com>
mwUncaughtExceptions: send back JSON if requeted so

uses d868c5bb0016805c52b64d36b06c0ef1fd312134

Signed-off-by: Oleg Verych <olecom@gmail.com>
ctl.Login: update comments

`destroy()` is used now, todo was done some time ago

Signed-off-by: Oleg Verych <olecom@gmail.com>