templates: Improve comments for recipient_row.hbs.
templates: Improve comments for recipient_row.hbs.

We also squash some whitespace in the HTML, although
it's mostly irrelevant since you can't copy/paste
the text.

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