Allow no traslatable entities add vote result relations

Problem/Motivation

Custom entities no translatable, not allow to use vote result as a relations in views ui.

Steps to reproduce

1. Create a custom entity not traslatable
2. In View UI try to relate to vote results.

Proposed resolution

In votingapi.views.inc function votingapi_views_data_alter, in the conditional "Limit to content entity types.", line 44, remove $entity_type->isTranslatable() condition.

Remaining tasks

User interface changes

None

API changes

None

Data model changes

None