Finally get sync test working again

Conflicts:
	programs/bts_xt/htdocs

Conflicts:
	tests/bts_xt_client_tests.cpp
Extract the function to convert a key to WIF format from key_to_wif.
Compile revision information into bts_xt_client and return in
JSON get_info command.

Conflicts:
	libraries/client/client.cpp
	libraries/client/include/bts/client/client.hpp