Update notes for submitted changes

* RefDatabase: Remove fallback exactRef implementation
* RefDirectory: Fire RefsChangedEvent on error, too
* RefDirectory: Refactor getRef and exactRef to share code

32/da5ac3c3591ddcaf8d3169248b03c163dc3097

@@ -0,0 +1,7 @@
+Verified+1: CI Bot
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-by: Jonathan Nieder <jrn@google.com>
+Submitted-at: Wed, 26 Dec 2018 22:20:14 -0500
+Reviewed-on: https://git.eclipse.org/r/60108
+Project: jgit/jgit
+Branch: refs/heads/master

98/95338de1c92d09fe82ec927e5ffd2da0973084

@@ -0,0 +1,7 @@
+Verified+1: CI Bot
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-by: Jonathan Nieder <jrn@google.com>
+Submitted-at: Wed, 26 Dec 2018 22:20:14 -0500
+Reviewed-on: https://git.eclipse.org/r/60164
+Project: jgit/jgit
+Branch: refs/heads/master

f4/6e223187387f50f5e09702fc033e4845bb3bf1

@@ -0,0 +1,7 @@
+Verified+1: CI Bot
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-by: Jonathan Nieder <jrn@google.com>
+Submitted-at: Wed, 26 Dec 2018 22:20:14 -0500
+Reviewed-on: https://git.eclipse.org/r/60109
+Project: jgit/jgit
+Branch: refs/heads/master