[FIX] Fixed the traceback(KeyError: <osv_memory_model_name>) which is fa...

...ced only 1 time when installing a module from 'Settings/Configuration/' menu which has some 'Automactic' cofiguration wizard('ir.actions.todo', like account or document)

Steps to reproduce:
1) Create a new db and install "base_setup" module,
2) Go to "Settings/General Settings" and check "Manage multiple companies" and apply the changes.

After installation of a few account related modules system is expected to automatically launch the accounting wizard, but instead, it shows traceback saying something similar to #2561. However, the traceback is faced only one time, clicking on "Apply" again will launch the wizard as usual.

I have shared my findings at https://github.com/odoo/odoo/pull/2711#issuecomment-56840736, would you please go through them and share your feedback on it.

Thanks.