Create user facing form for creating Events

[woodb]

Following #26, create a user facing form for creating Events:

• name -> post_title
• description -> post_content
• type {Meeting, Workshop, Lecture, Other}
• place
  • country
  • state
  • county
  • city
  • zip
  • street address
  • latitude
  • longitude
  • url
  • map_url
• starts_at
  • date
  • time
  • timezone
• ends_at
  • date
  • time
  • timezone
• organization
• url

[woodb]

Check the Invite permissions

Only those users that have Invite permissions can create Events for a given Entity (Group)