Hover does not work for touch-based devices like mobile phones.
Hence the the icons does not appear, making the user unaware of its
presence on such devices. The following media property displays the
icon by default for such behaviour.
Since All messages narrow is no longer home page for webapp,
we change its icon to align-left which also shows a concept of
interleaved topics / messages.
Gaurav Pandey
Aman Agrawal
Anders Kaseorg
YashRE42