[IMP] odoo-shippable: Load .bash_aliases at the end of .bashrc

Currently, when the Docker image docker-odoo-image is built up, all modifications to the file .bashrc are appended at the end of the file.

Even though this behavior works just fine in most cases, it also overrides possible-user-defined settings on the file ~/.bash_aliases, because that file is loaded before all modifications, thus making image settings taking precedence over user-defined settings.

This change re-locates the inclusion of .bash_aliases at the end of ~/.bashrc, so all settings and aliases defined on .bash_aliases are not overridden anymore.