Suggestion: Link to duplicates

[felixvd]

If you are trying to add a note that already exists through Anki's regular Add dialogue, it offers you to show the duplicate note in the browser. Maybe Yomichan could do the same instead of disabling the symbol when a note has already been added? The symbol could be colored red instead.

This would be helpful when adding context or new examples to a term you have already added to your deck from another text. It might cause lag too, though.

Just putting this in here so I don't forget.

[dayjaby]

Check this pull request: FooSoft/yomichan#9

See this:
Instead of preventing users to not add a note for a vocabulary that exists already, he has the option to overwrite it now. Overwritting is done by clicking on the blue '+'-button. In this case, all fields in the existing notes are overwritten. Except for the case that the name of a model's field ends with '+'. In this case field's new value is added to the old value with new-line in-between.

If you are interested in the most up-to-date branch, please check https://github.com/dayjaby/yomichan/tree/korean