This way command-line scripts that use our `optparse` populator can
still specify a custom client without munging their `parser` object.
(imported from commit df8d28a46a4d4574523b106030dbfed2d9ac931e)
We previously sent our client type to the server as a GET/POST parameter
of "client=<something>", most commonly "client=API: Python".
We switch here to providing the same information as a User-agent header
sent on each request, which is more standards-compliant.
Also added is some data about the platform the user is using. If your
client string was set to "MyLittleZulip/1.0", the resultant string could
look something like this:
MyLittleZulip/1.0 (Ubuntu; 12.04)
(imported from commit 39fd187a8f9d4b3c9b63fc623e0836e57a4099ca)
Previously it only provided the list of all public streams; now it
allows one to specify any union of some of the following:
* all public streams
* all streams the user subscribed to
(the most relevant being the union of those two, which is what we want
for the "streams" page).
Or:
* all streams in realm (superuser only)
The manual task required is that when this is pushed to prod, we need
to also deploy the new sync-public-streams version to zmirror.
(imported from commit 27848b8bd136e2777f399b7d05b2fdcec35e4e21)
When we deploy this, we'll need to of course actually build and deploy
the new API tarball.
(imported from commit 03c853e8a9424a63f1c74bb83637d5a1e50a159a)
