Added more negative tests to ot_test.opentxs
Make sure all commands and functions follow the same naming conventions
Merged command, category, and helptext maps into one
Simplified command list display logic
Removed useless showincoming and showoutgoing commands
Folded ot_opentxs_ot.cpp code into opentxs/main.cpp
Command line processor code does not belong in the API library
opentxs exe: rename vars
opentxs exe: switch to nullptr
opentxs exe: Split in C++ Class
opentxs exe: Moved anyoption.* into opentxs exe (only used there)
opentxs CLI exe: More class rename