[wall] fade time set to half of scrolltime
Revert "[wall] fade time set to half of scrolltime"

This reverts commit c46d1788da0ad398c431e1fb5e1191ebe5b0da51.
[wall] fade time set to half of scrolltime
[extendedinfo] rewrite actor dialog to match v5 style
[wall] move background out of view include
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