This reverts commit be93b6ea28.
Unfortunately, the newer jquery comes with a huge performance
regression affecting the hotkeys code, which has the effect of making
typing super slow.
Fixes: #1449.
* The warning contains a count of the number of people in the stream.
* An error appears if the warning is ignored and the user tries to
send the message anyway.
* The message cannot be sent until the warning is acknowledged or @all
/ @everyone is removed.
* This only applies to stream messages and not private messages.
Fixes#853.
Whenever a user became active, this triggers an immediate presence
update event (to show that user as active). The implementation for
that event (running on the browsers of all other users in the realm)
would fully rerender the presence list, which can be an expensive
operation in a large realm, just to update the status for that one
user. This fixes that case to just remove the user from the list and
then re-insert it at the appropriate index.
[Commit message expanded with more details by Tim Abbott]
The node packages 'jQuery' and 'jquery' are different--'jQuery' is the
legacy support package that is needed for Zulip so the require statements
in the tests were updated.
Travis uses node 4.0 by default and we are using 0.10, so the command to
install the correct version had to be added to the .travis.yml file.
