Deprecated messages in 4.7

Created by: lolaslade

Using the latest version for 4.7 the logs are filling with quite a few messages. Looks like this happens every time a setting is accessed. Deprecated: Group='CDNTaxReceipts'. Name='receipt_signature'. Defaults should come from metadata

For an example of the new format see: https://issues.civicrm.org/jira/browse/CRM-17507

Thanks for the 4.7 update by the way!