Production release 2.4.2

[vikasrohit]

Release contains following updates:

1. Now users can configure the email notification settings for connect events within connect. Now we don't redirect them to the profile settings page for configuring the email notifications. With this release, we are only supporting messaging events settings, in upcoming releases we would enable the same for other project events as well.
2. Emails can be bundled now to reduce the clutter in mail box of the users.
3. Adapted remaining portion of the application for being mobile friendly. Specifically, error pages are now mobile friendly.