Fix v2 aws sync commands

[chrisjkuch]

https://github.com/drivendata/cookiecutter-data-science/blob/b4c0c12243653c493c188239af14c835b9768fbc/%7B%7B%20cookiecutter.repo_name%20%7D%7D/Makefile#L62

In v2, sync_data_up incorrectly lists the bucket as the source directory, rather than the local data/ folder. The order should be filpped.

In addition, there is inconsistent use of environment variables. sync_data_down uses the templatized AWS profile from the cookiecutter form:

https://github.com/drivendata/cookiecutter-data-science/blob/b4c0c12243653c493c188239af14c835b9768fbc/%7B%7B%20cookiecutter.repo_name%20%7D%7D/Makefile#L51

while sync_data_up uses the PROFILE environment variable which is not set in the Makefile.

https://github.com/drivendata/cookiecutter-data-science/blob/b4c0c12243653c493c188239af14c835b9768fbc/%7B%7B%20cookiecutter.repo_name%20%7D%7D/Makefile#L63