We were using Gravatar for user avatars, but now users can
upload their avatars directly to Zulip, and we will store
their avatar for them. This removes the old Gravatar-related
interface and polling code.
This commit does not attempt to update the avatars in
messages that have already been loaded, either for the user
making the change or other users.
(imported from commit 301dc48f96f83de0136c93de57055638c79e0961)
The close() method will let you release handlers, as well as
doing everything clear() does.
(imported from commit 3a67c3f2226918cee10cf43598e0408fb186408a)
The set_up_file_input() function now returns an object to the user
with a clear field. This object will grow soon.
(imported from commit 7b3761eafddb392bd2c84a1685aa8d1811028a0f)
Extract some local variables to set up the next refactoring, where
we can parameterize the function.
(imported from commit 1c2801131c19a54713a0d5c2cc26c419412339b0)