Cli wallet tests framework

[oxarbitrage]

The first commit removes the cache from wallet call get_account that do more harm than good and was removed from bitshares since a while(bitshares/bitshares-core#640).

Second commit actually add the cli test framework with some test cases examples, more can be found in the bitshares version.

oxarbitrage@oxarbitrage-Lenovo-ideapad-320S-14IKB:~/CLionProjects/pp_cli_wallet_tests/peerplays$ ./tests/cli_test -l all
...
*** No errors detected
oxarbitrage@oxarbitrage-Lenovo-ideapad-320S-14IKB:~/CLionProjects/pp_cli_wallet_tests/peerplays$ 

Sorry the delay on this, had a hard time making it work.

[oxarbitrage]

This is for #59

[pbattu123]

I would say core tokens instead of bitshares in the message.

[oxarbitrage]

thanks, changed at 1d1193e