CRM-13442 Clarify new help text for Record to Database, and explain usage.

----------------------------------------
* CRM-13442: Update Outbound Email help text
  http://issues.civicrm.org/jira/browse/CRM-13442
Merge pull request #1687 from davecivicrm/CRM-13442

CRM-13442 Clarify new help text for Record to Database, and explain usag...