v4.5.15.8 release

v4.5.15.8 has one bug fix and one improvement.

Significant improvement

• The method DefaultDatabasePing#ping now calls Database.Static#getDefaultOriginal to ensure it retrieves the original default database (instead of a possibly overridden default database).

Significant defect addressed

• Corrected an issue preventing the correct display of the Conversation widget in custom forms.