R1:a298a79bdac6

Convert Phabricator to handle "%s" / "%B" properly

Summary:
Ref T1191. I believe we only have three meaningful binary fields across all applications:

- The general cache may contain gzipped content.
- The file storage blob may contain arbitrary binary content.
- The Passphrase secret can store arbitrary binary data (although it currently never does).

This adds Lisk config for binary fields, and uses `%B` where necessary.

Test Plan:
- Added and executed unit tests.
- Forced file uploads to use…