Excellent little addon. LOVE the checklist, very thorough. Would like to see a little popup descriptor for each setting. Inaccurately reported session identifiers and tls fast_start setting as its opposite.

Disable SSL False Start security.ssl.enable_false_start true
Disable SSL Session Identifiers security.ssl.disable_session_identifiers false

false_start is actually disabled, and session_identifiers are actually disabled... not sure whats going on here.