Fix TypeError: Cannot read property 'map' of undefined

Multiple webcams stop all button

add specs to breakout autotest and fix old outdated autotests

* added post_events example and analytics callback

* updated dependency

Update Meteor from 1.9 to 1.10.2

Revert "Replace unsafe react lifecycle methods"

Revert "Create layout context and add a layout manager"

Fix breakout autotest

Auto select default.pdf after deleting the current presentation

Create layout context and add a layout manager

Replace unsafe react lifecycle methods

Make List of waiting users scrollable