Merge pull request civicrm#12780 from seamuslee001/5_5_release_notes_…

…update

(NFC) Update 5.5 Release notes to take into account pr civicrm#12777

release-notes/5.5.0.md

@@ -201,6 +201,11 @@ Released September 5, 2018
   displayed properly, Money is formatted properly and the Cost field is
   displayed.
 
+- **[dev/core#346](https://lab.civicrm.org/dev/core/issues/346) Fix Online Pay Now links when used from Dashboard.
+ ([12777](https://github.com/civicrm/civicrm-core/pull/12777))**
+
+  This fixes an issue with the Online Paynow link when the dashboard is access by an annonmyous user using a checksum link.
+
 ### CiviMail
 
 - **[CRM-21768](https://issues.civicrm.org/jira/browse/CRM-21768) NOFOLLOW