While in there I added tags to releases and developers that were missing.
To test:
* Log in to staff client
* visit about koha
* check to make sure timeline is right
Signed-off-by: Larry Baerveldt <larry@bywatersolutions.com> Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com> Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>