Adds "You" and "Drafts from conversations with yourself" as
labels in the drafts overlay for the DM conversation with
the current user.
Co-authored-by: Lauryn Menard <lauryn@zulip.com>
To avoid restore tooltip of message from being displayed outside
the overlay, we define a boundary, outside which the tooltip
cannot exist. Popper library is smart enough to render the tooltip
correctly by respecting the provided boundary and flipping the
tooltip placement if required.
Earlier, we were displaying `realm_empty_topic_display_name` as the
topic name when topic="".
This was not the expected behavior when `realm_mandatory_topics=true`.
This commit updates the logic to show empty string in such cases.
