operable:pipeline-list and operable:pipeline-history fail if chat username != cog username

[imbriaco]

  [file: 'lib/cog/commands/pipeline/list.ex', line: 69]},
 {Cog.Commands.Pipeline.List, :handle_message, 2,
  [file: 'lib/cog/commands/pipeline/list.ex', line: 38]},
 {Cog.Command.GenCommand, :process_message, 3,
  [file: 'lib/cog/command/gen_command.ex', line: 188]},
 {Cog.Command.GenCommand, :handle_info, 2,
  [file: 'lib/cog/command/gen_command.ex', line: 163]},
 {:gen_server, :try_dispatch, 4, [file: 'gen_server.erl', line: 601]},
 {:gen_server, :handle_msg, 5, [file: 'gen_server.erl', line: 667]},
 {:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 247]}]