Fixed 2 failing migrations.
Added Выбрать button in _word_picker_modal.

Also update word_picker.js to handle that button.
Added words[entry.word] checking for nil in import_lexicon.rake.

It fails in clear database because words is not contain anything.
Checking words for nil prevents this.
Set AllowClose to true in editor.js#wordPickerDialog.
Merge pull request #34 from sld/feature/choice-and-cancel-buttons

Feature/choice and cancel buttons