popovers: Offer edit history option for stream moves.
popovers: Offer edit history option for stream moves.

Apparently, we were only dispalying the edit history option in the
message actions popover if the topic/content were changed. Fix this by
adding a small adjustment to the conditional to include stream
changes correctly.

rht/zulip,zulip/zulip,andersk/zulip,rht/zulip,zulip/zulip,andersk/zulip,andersk/zulip,rht/zulip,andersk/zulip,kou/zulip,rht/zulip,kou/zulip,zulip/zulip,zulip/zulip,kou/zulip,rht/zulip,kou/zulip,zulip/zulip,rht/zulip,rht/zulip,andersk/zulip,andersk/zulip,andersk/zulip,zulip/zulip,zulip/zulip,kou/zulip,kou/zulip,kou/zulip