#73 Dictionary Import issues

[Em Tempest]

Words in the imported dictionary that do not occur in the current one are added to the current dictionary, along with their pronunciation and word status.
Unverified words in the current dictionary are replaced with verified ones from the new dictionary.
If a word was verified in both dictionaries, but assigned a different word status, the user is asked whether to replace the word status and pronunciation of the word in the current with that from the new dictionary, or not.
If a word has been assigned the same status in both dictionariesthe new pronunciation is ignored, and the current one is used.
TODO - the User must rather be prompted same as before, and choose which pronunciation to use