Note: This doesn't change the occurences in the Zapier integration doc,
since they refer to pieces of the UI in Zapier, which may still be using
the "Stream" terminology.
markdown-include is GPL licensed.
Also, rewrite it as a block processor, so that it works correctly
inside indented blocks.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
The screenshot generating mechanism doesn't work for newrelic and
causes error because its configuration file doesn't exist. This
commit fixes the configuration and re-generate the screenshots.
