hipchat import: Handle deactivated users without an email address.
hipchat import: Handle deactivated users without an email address.

We saw this in a recent HipChat import data set.

jackrzhang/zulip,punchagan/zulip,eeshangarg/zulip,hackerkid/zulip,shubhamdhama/zulip,showell/zulip,eeshangarg/zulip,kou/zulip,synicalsyntax/zulip,hackerkid/zulip,synicalsyntax/zulip,zulip/zulip,kou/zulip,synicalsyntax/zulip,rht/zulip,rishig/zulip,rishig/zulip,shubhamdhama/zulip,tommyip/zulip,hackerkid/zulip,rht/zulip,rht/zulip,hackerkid/zulip,timabbott/zulip,zulip/zulip,timabbott/zulip,brainwane/zulip,andersk/zulip,timabbott/zulip,rishig/zulip,kou/zulip,tommyip/zulip,showell/zulip,punchagan/zulip,eeshangarg/zulip,zulip/zulip,synicalsyntax/zulip,rht/zulip,showell/zulip,jackrzhang/zulip,punchagan/zulip,rishig/zulip,hackerkid/zulip,rht/zulip,andersk/zulip,andersk/zulip,tommyip/zulip,tommyip/zulip,brainwane/zulip,rht/zulip,hackerkid/zulip,brainwane/zulip,kou/zulip,jackrzhang/zulip,synicalsyntax/zulip,timabbott/zulip,dhcrzf/zulip,timabbott/zulip,shubhamdhama/zulip,timabbott/zulip,eeshangarg/zulip,rishig/zulip,brainwane/zulip,kou/zulip,kou/zulip,punchagan/zulip,zulip/zulip,hackerkid/zulip,eeshangarg/zulip,andersk/zulip,shubhamdhama/zulip,rht/zulip,punchagan/zulip,jackrzhang/zulip,kou/zulip,shubhamdhama/zulip,dhcrzf/zulip,tommyip/zulip,brainwane/zulip,jackrzhang/zulip,dhcrzf/zulip,showell/zulip,shubhamdhama/zulip,zulip/zulip,jackrzhang/zulip,showell/zulip,dhcrzf/zulip,andersk/zulip,synicalsyntax/zulip,showell/zulip,showell/zulip,eeshangarg/zulip,andersk/zulip,tommyip/zulip,timabbott/zulip,zulip/zulip,dhcrzf/zulip,rishig/zulip,rishig/zulip,dhcrzf/zulip,punchagan/zulip,zulip/zulip,synicalsyntax/zulip,shubhamdhama/zulip,punchagan/zulip,tommyip/zulip,dhcrzf/zulip,jackrzhang/zulip,eeshangarg/zulip,andersk/zulip,brainwane/zulip,brainwane/zulip