Notary: replace OTCleanup with std::unique_ptr
Merge pull request #16 from toxeus/removeOTCleanup

Notary: replace OTCleanup with std::unique_ptr
opentxs-server: fix includes
CMake: link also opentxs-cash library
UserCommandProcessor: replace OTCleanup with std::unique_ptr
Merge pull request #17 from toxeus/removeOTCleanup

UserCommandProcessor: replace OTCleanup with std::unique_ptr