Merge pull request #14591 from JKingsnorth/dev/core#1064

dev/core#1064 Allow personalised 'view in browser' links for mass emails

diff --cc CRM/Core/SelectValues.php
Simple merge

diff --cc CRM/Mailing/Page/View.php
Simple merge

diff --cc CRM/Mailing/Tokens.php
Simple merge

diff --cc CRM/Utils/Token.php
Simple merge