Restore old Associative show method as print
Use basic dict printing as its show method

* The fancy showdict and showkv display method is now called from writemime within replutil.
* The plain dict printing method is simply show
* Plain key and value iterator show methods added, which simply show their collection without any additional markup
* The fancy showdict and showkv now accept keyword arguments to be more inline with showarray.
Merge pull request #7147 from mbauman/dict-print

Restore old Associative show method as print