Org: Register for Event

[adescoteaux1]

From the Org Schedule, when we click the reserve button

it should popup with this

And we should handle selecting a child and registering for the event

and show the confirmation:

[josh-torre]

@adescoteaux1 Pretty sure this goes with #159 I think I did the work for it there

[adescoteaux1]

@josh-torre i think this is erroring when i try to register - not sure if you completely finished it or not in the other PR

[josh-torre]

Note to self, need to do:

• Test with successful registration
• Update privacy policy