Merge pull request #92 from otiai10/refactor

Refactor
improve UI : show screen shot only when there is WidgetWindow
improve UI
add config checkbox about screenshot
Merge pull request #93 from otiai10/feature/improve-ui-about-screenshot

improve ui about screenshot
focus on Exist, launch on NotExist
fix typo : "Uitl" :smiling_imp:
Merge pull request #94 from otiai10/feature/improve-notification-reaction

focus on Exist, launch on NotExist
fix bug : hide screenshot in default
TMP : try to fix focusing bug
fix bug : multi binding click event & unknown window.close
fix a bit : do not sound when force notification
fix bug : もう疲れた。帰る。あした会社サボりたい
Merge pull request #95 from otiai10/fix/focus

fix focus problems : カオスすぎて死ぬかと思った
change milestone : "GO FOR 0.2.9.9" -> "GO FOR 0.2.7"
tmp
close select popup window
Merge pull request #96 from otiai10/fix/focus

close select popup window
Merge branch 'develop' of github.com:otiai10/kanColleWidget into develop
skel of specialized title