auth=public is not necessary to depending on website, however rendering within website/website's layout blows up if there is no current user

alter tutorial module to use scaffolded structure

leaves a bit of room for diff mark & a small gutter in a 80c system

blocked at introducing qweb template, ir.qweb lives in the registry but nodb -> no database
with --db-filter there's a database in the session (kinda) but need to fetch it and manually get the corresponding registry...

fixes #39

After further considering PR #21's arguments, the setup script should
not go around setting `color.ui`:

* it shouldn't be needed for recent gits with default compile
  settings[0]
* it may override advanced users's own colour configuration/
  customisations (or disabling)
* it forces default colours on users for which it may be useless
  (colour- blind) or even detrimental (other vision impairments)
* some linux distributions apparently default to idiotic pagers which
  can't handle ANSI colour codes by default and spew garbage to the
  terminal

[0] https://github.com/git/git/blob/master/Documentation/RelNotes/1.8.4.txt#L178-L180

[FIX] Issue #11: fix spelling of model name in account_budget wizard, courtesy of Romain Deheele

A pipe does not work because the script asks questions, and required
parameters would miss the point.

[ADD] convert bzrignore to gitignore

* don't set globally
* set for ui, not each command individually

[IMP] Move migration instructions on top, remove cruft

Prompts don't work with curl | sh as the stdin gets filled with the nothing out of curl

raw.github.com redirects to raw.githubusercontent.com but curl does not follow 
redirections by default, so use the correct URL