Eval and Validation methods

[danielbis]

To Do:

• . Use Stanford Contextualized Word Similarity
• Convert to tf_records using the existing dictionary so that the IDs match
• Split into validation and eval

Later:

• . Use ELMo eval metrics, especially WSD
• . Create own WSD algorithm using the new embeddings

[danielbis]

Move export_dicts_helper from wordnet_helper to utils and update vocab while loading eval