Add incident upload for area coordinators

[redshiftzero]

We'd want to store only the public data:

• Date/time of incident (rounded to hour)
• Exact location (rounded to block)
• Incident report # (this is something that would be specific to the local organization, so they can check against their private report to look up e.g. witnesses of a specific incident)
• Officers involved (link to officer ID)
• License numbers
• Description of incident
• We do not want to store the victim or witness information.

Editable by: Administrators, area coordinates (requires #355)

Copwatch Berkeley incident form for reference:

[raq929]

Branch on trusted-user-upload branch

[raq929]

Attribute description to Berkley CopWatch

[raq929]

What do you mean by rounded to block when you talk about the location?

[raq929]

Update: I'm doing street, cross_street1, cross_street2