Possible improvement for the speaker app to onboarding process for 2023

[amberhinds]

This was an idea I discussed with @joedolson in #organize-speakers on Slack.

1. Gravity Form for speaker applications creates "pending" sessions.
2. Sessions that are selected get changed to draft status. (Manually by speaker team.)
3. Speaker onboarding form includes a dropdown that uses Gravity Perks Populate Anything to allow speakers to select their session from the draft session posts. There is a checkbox on this form to denote if the person is the lead speaker.
4. Lead speaker is able to update the title and description of the draft session post.
5. On submission of the speaker onboarding form speaker posts are automatically connected to the session.
6. After the schedule is finalized all pending sessions (from non-selected talks) are deleted.

[amberhinds]

Additional improvements needed for next time (applies to both speakers and volunteers):

• If selecting no t-shirt, the mailing address fields should be hidden/not required.
• If getting a t-shirt and outside of the USA, a phone field needs to be required (the shipping company wants this)
• Pass profile info to user account as well as the people post