Code cleanup following IDE advice

Julien LepillerSun May 31 20:59:07+0200 2020

19e038a

nani/app/furiganatextview/src/main/res/values
namelast commitdate
attrs.xmlAdd furiganaMon Apr 15 20:09:48+0200 2019
strings.xmlAdd furiganaMon Apr 15 20:09:48+0200 2019