Add correct localization handling

[goanpeca]

To be able to correctly localize external plugins we need to use get_translation method and provide the module name like:

from spyder.config.base import get_translation

_ = get_translation('spyder_terminal')

@ccordoba12 maybe we should add a module on the spyder api like or similar

from spyder.api.i18n import get_translation  # Maybe think of a better name :-p for this func

[ccordoba12]

Sounds good to me.

[ccordoba12]

Is this already solved?

[goanpeca]

Yep