- pulls more of the travis-ci s3 deploy into the repo so we can potentially migrate to another CI system
 - fixed the sizes output and added verbose compiler version to cmake (#6322)
 - fixed filenames for firmware uploaded to s3 (was broken by the changes yesterday)
 - fixed some broken git version display in cmake
 - Makefile organization
 - simplified .travis.yml
 - added a print to know which config the nuttx patch was being applied to
 - docker_run.sh now respects PX4_DOCKER_REPO for setting the docker image, but defaults to the good production nuttx image

 * use regular optimization levels for the code coverage build.
 * the mixer test fails intermittently when built without optimization

 - dataman clean exit code
 - unit test proper cleanup
 - add some level of simulated sensors for tests
 - delete unused test/standard_vtol

While at it, fix the trailing continuation line in the last item.

The ninja binary may have other names on Linux distributions. On Fedora
it's ninja-build.

-closes #5862