Code cleanup
Fix issue with email which was lost when connecting a new login
Use the login URL as the enternal authentication starting point. Other corrections
Other fixes related to login URL
Correct issue with email lost on accounts merger - the right way
Added some clarifications in the documentation.
Small change to the way links are built to conform to W3C validator rules
Corrected the redirection after merging or canceling a merge
Release 2.1.0