Update Events Module to Version 2

[Andrew-Woodford]

Egnyte have recently updated the Events module to version 2 which also includes permissions change events by default. The codebase currently uses version 1 so misses the permission change events.

I can't see any other functional changes this has and should be a simple case of changing the version number in urls in events.py from v1 to v2. I've monkey patched this locally and have seen no issues so far.