Add a note to the words while translating
Extract `_add_translation_item` method
Make the names consistent:
"word_dst" => "word_translations";
"dst_item" => "trans_item";
"do_word_dst" => "for_each_trans_item".
Get rid of unused method
Refactor `add_trans_item` method
Rename `get_partofspeech_index` method as `get_partofspeech_id`
Rename `_add_translation_item` method as `_add_translation`
Select a page after it has been created
Minor refactor of `enable_controls` method and perltidy