Fix resources path in src/python/pants/BUILD:pants_transitional_publishable_library target consumed at twitter

Bugs closed: 245

Reviewed at https://rbcommons.com/s/twitter/r/544/
Add benjyw@gmail.com to travis ci emails.
Convenient scripts for working with rbt.

Prevents having to memorize flags, and saves some editing in the web form.
encourage folks to add themselves to .travis.yml

Testing Done:
./build-support/bin/publish_docs.sh -o # oh pretty

Reviewed at https://rbcommons.com/s/twitter/r/557/
Break out stty settings handling into a utility.

So we can reuse it for python REPL running, eventually.
Added support for multiple pants_support_baseurls.

Changed pants_support_baseurl to a list. Pants now goes through each url in the list from first to last, downloading the first binary with a valid url (and then breaking). This way, pants users can set their own support repo online and add it to the beginning of the list, so that their repo will be queried before the default repo on pantsbuild.github.io.