Added chrome, reba, and relx. Tweaked base and cleanup.

install/00_base.sh

install/01_jenkins_user.sh

install/10_build_essential.sh

install/11_docker.sh

install/12_chrome_xvfb.sh

install/20_ant.sh

install/21_maven.sh

install/30_android.sh

install/40_erlang.sh

install/41_rebar.sh

install/42_relx.sh

install/99_cleanup.sh