invite: Use `email` rather than `values[0]` in invite.js.
invite: Use `email` rather than `values[0]` in invite.js.

punchagan/zulip,brainwane/zulip,brainwane/zulip,hackerkid/zulip,hackerkid/zulip,zulip/zulip,brainwane/zulip,kou/zulip,kou/zulip,punchagan/zulip,andersk/zulip,andersk/zulip,kou/zulip,rht/zulip,kou/zulip,eeshangarg/zulip,punchagan/zulip,punchagan/zulip,zulip/zulip,hackerkid/zulip,zulip/zulip,eeshangarg/zulip,brainwane/zulip,showell/zulip,rht/zulip,andersk/zulip,rht/zulip,hackerkid/zulip,andersk/zulip,showell/zulip,eeshangarg/zulip,kou/zulip,hackerkid/zulip,showell/zulip,showell/zulip,andersk/zulip,punchagan/zulip,hackerkid/zulip,brainwane/zulip,rht/zulip,brainwane/zulip,zulip/zulip,showell/zulip,rht/zulip,eeshangarg/zulip,showell/zulip,eeshangarg/zulip,zulip/zulip,andersk/zulip,rht/zulip,eeshangarg/zulip,eeshangarg/zulip,andersk/zulip,hackerkid/zulip,kou/zulip,kou/zulip,zulip/zulip,zulip/zulip,punchagan/zulip,rht/zulip,showell/zulip,brainwane/zulip,punchagan/zulip