Move flat file models to database

[andrewwoods]

Need tables for Speakers, Talks, Schedule,

Speakers

• id
• firstname
• lastname
• job_title (evangelist, developer, etc)
• company
• website_url
• joindin_url
• twitter_name
• email_address
• location

Talks

• id
• title
• description
• topics
• slides_url
• joindin_url
• type (presentation, workshop, etc)

Schedule

• id
• date
• start_time
• end_time
• talk_id