Security updates for Rails.
Update CHANGELOG for Release 1.4.7.
Bump cookie_store session id.
Do not fail in migrations if honorific_prefixes table already exists.
Update CHANGELOG.
Update CHANGELOG.
Merge remote-tracking branch 'origin/stable-1-4' into staging

Conflicts:
	CHANGELOG
	Gemfile.lock
Merge branch 'staging'

Conflicts:
	CHANGELOG
	Gemfile.lock