Just to let you know i got exactly the same issue.
OpenHAB (version 2) installation started
Installation démarrée – Les messages seront actualisés toutes les 3 secondes pour montrer la progression de l’installation.Lorsque que c’est terminé le message disparaît.
Reading state information…
Reading package lists…
Building dependency tree…
Reading state information…
The following extra packages will be installed:
libassuan0 libksba8 libpth20
The following NEW packages will be installed:
dirmngr libassuan0 libksba8 libpth20
0 upgraded, 4 newly installed, 0 to remove and 147 not upgraded.
Need to get 354 kB of archives.
After this operation, 817 kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
libassuan0 libksba8 libpth20 dirmngr
Executing: gpg –ignore-time-conflict –no-options –no-default-keyring –homedir /tmp/tmp.JJb5OJMktq –no-auto-check-trustdb –trust-model always –keyring /etc/apt/trusted.gpg –primary-keyring /etc/apt/trusted.gpg –recv-key –keyserver keyserver.ubuntu.com EEA14886
deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main
deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main
Reading package lists…
Building dependency tree…
Reading state information…
Finished – please click here to reload Page to see Changes
Here is the log file.
After clicking on the reload link. The page goes back to the previous state as if i never clicked on „install openHAB“ button