[IMP] [BACKPORT] Converto bzrignore to gitignore, like what has been done in master.
Merge pull request #126 from odoo-dev/saas-4-gitignore-tde

[IMP] [BACKPORT] Converto bzrignore to gitignore, like what has been done in master.
Merge remote-tracking branch 'odoo/saas-4' into saas-4-speakers-rim