review theme module structure
Is the `__init__.py` file needed: I assume yes cuz is a python module. Next question, is the version import needed? I think is not, shall it be removed?

``` python
from ..version import __version__

__all__ = ('__version__', )
```
diff --git a/invenio_rdm_records/theme/__init__.py b/invenio_rdm_records/theme/__init__.py
index 44c0267..71eaff5 100644
--- a/invenio_rdm_records/theme/__init__.py
+++ b/invenio_rdm_records/theme/__init__.py
@@ -7,7 +7,3 @@
 # it under the terms of the MIT License; see LICENSE file for more details.
 
 """Invenio RDM Records."""
-
-from ..version import __version__
-
-__all__ = ('__version__', )
['invenio_rdm_records/theme/__init__.py']