Generate expected schemata for Calendar

Summary:
Ref T1191.

  - There was a varchar(50) column. I changed it to `text64`, since this length is unusual.
  - There was an int(3) column. I changed it to `int32`, since this length is unusual.

Test Plan: Ran migrations, saw warnings disappear from config tool.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T1191

Differential Revision: https://secure.phabricator.com/D10524