Odoo update to version 20150303

But also:
* Update wkhtmltopdf version, fixing header and footer bug in reports
* Mount extra-addons dir for users own addons
* Use entrypoint instead of cmd to allow specifying arguments inline
* Expose 8069 and 8071 ports
* Remove gosu as not necessarily needed
* A bit of refactoring of the Dockerfile and the run script

library/odoo

@@ -1,5 +1,5 @@
 # maintainer: Aaron Bohy <[email protected]> (@aab-odoo)
 
-8.0: git://github.com/odoo/docker@a86b7e6dbc31d19b6180fdf00e56b4a0f5fe32ff 8.0
-8: git://github.com/odoo/docker@a86b7e6dbc31d19b6180fdf00e56b4a0f5fe32ff 8.0
-latest: git://github.com/odoo/docker@a86b7e6dbc31d19b6180fdf00e56b4a0f5fe32ff 8.0
+8.0: git://github.com/odoo/docker@89454a4c4167c95c7b2cccf12f7ba5a6187af62c 8.0
+8: git://github.com/odoo/docker@89454a4c4167c95c7b2cccf12f7ba5a6187af62c 8.0
+latest: git://github.com/odoo/docker@89454a4c4167c95c7b2cccf12f7ba5a6187af62c 8.0