This patch brings a better in-VM experience to attendees of the upstream
training, with fixed links and README and a default opening page of
firefox that points to the rendered version of the README.
The firefox places sqlite database is also removed and the
git-compatible text version is included so updating links would be
easier in the future.
Pip packaage list also updated (2019-02-13)
Change-Id: I0849df7a09d94d5d8118c87da9b2f1b2210b1c25
a019f9dbee