add some save stat in debug.
replace few std::string by const&.
fix actor destructor not virtual.
add Saving/Loading event trigger when a save start to save/load.
REVERT THIS COMMIT!
Merge branch 'feature/save_log_stat' of git://github.com/asmodehn/WkCocos into game/dragonfall
Revert "improving version check and DLC."

This reverts commit 6de0b936dcff3ba4d09f05e4d99fd8c74726e283.
Revert "Revert "improving version check and DLC.""

This reverts commit 1dc08abdba9f3fe78ea48cb5add7c0733131941b.
Revert "REVERT THIS COMMIT!"

This reverts commit b27821287837840ce09c5c5f23c289e496728252.
Merge remote-tracking branch 'origin/feature/fix_version_android' into game/revert