The IDE include checker got to the point where it is actually useful and
this removes a lot of unneeded includes.
Naturally, especially for headers like util.h, this may mean we need to
re-add includes in consuming cpp files that bloats the diff a bit.
This follows the coding style guideline that the file that contains a
class should follow the exact name of this (main) class.
key.{h|cpp} -> PrivateKey.{h|cpp}
The unit tests testing base58 encoding were using univalue JSON
parsing, since we deprecatd univalue to be a hub-private lib
this has now been ported to Qts JSON parser.
Which also makes the clunky cmake hack nice to replace with the
QRC files concept.
As I was in there anyway, the base58 methods being global scope
C-style methods has now been fixed by putting them in a namespace.
tomFlowee