Ui improvement

implemented a new number select view on the alert dialog appeared in changing a value of blocks

in accordance of this implementation, the old 'SelectNumberView' has been changed so that
it inherits a common new parent class named 'NumberSelectView'
この仕組よくわかってないのだけど，
2つ目の引数が
1 -> prurals.xmlのone
それ以外 -> prurals.xmlのother
という仕組み？対応がよくわからない