Problem upgrading from 7.9.x to 7.10.0

Hi,
I have tried to upgrade suitecrm 7.9.xx (i have 2 instances, 7.9.11 and 7.9.14 running on ubuntu 16.04.01, Apache/2.4.18, PHP Version 7.0.25, MySQL version 5.7.21 ). However i get an error at the last stage of the upgrade wizzard (see attached screen shot) , the button “DONE” to finish the upgrade does not work.
you can also see new links appearing on the right (starting all with “+” signs) and on the left.

i have tried to go “Admin” to do a “repair” but here i find a strange behavior : almost all links do not work except that sometimes, depending on the scroll screen position, i can see when the mouse hovers over a given link that it gets activated (meaning i can click on). but even here, for example when i manage to get “Repair” activated when i reach the repair page, none of the repair links works.

all upper tool bar menus seem to work. i also tried to do manually a repair by using the link “index.php?module=Administration&action=repair” but it did not solve the problem. for example if i navigate to a module (contacts) i can see the list of contacts but cannot click on any of them to get to the detail view.

any hint?