Kanji Info for Ankidroid! Second version.
Improve Aedict integration

When Adding card via Aedict intent, automatically add meaning
information when avaliable. Before it was only adding the
reading(hiragana) and the word in kanji. With this new functionality, if
the user model has at least 3 fields, extra information will be added
(meaning/reading/kanji).
Nullcheck in StudyOptionsActivity.onMenuOpened