設定画面の追加
Merge branch 'master' into develop-settingview

Conflicts:
	src/main/java/net/nokok/twitduke/controller/MainViewController.java
javadocを修正
Merge branch 'master' into develop-settingview
Configクラスの追加
Merge remote-tracking branch 'origin/master'
clean
Merge branch 'develop-settingview'
Configクラスにツイートセルのマージンを追加