More CV work.
Merge remote-tracking branch 'zhyk/hotfix' into hotfix
More CV work.
LaunchCard refactoring, CV related.

* All card launching actions now uses LaunchCard,
  now SE works as expected.
* Nazrin: only preserve first SE of Agile.
incr ver, welcome msg.
Roukanken & Seija bug fix.
Rinnosuke: Sound effect appears at most once per ten seconds.