Changes (as compared to 6.26) include:
* Monyog no longer prompts the user to re-type the admin password while upgrading on Windows.
* Monyog was not able to authenticate a user from LDAP group consisting of linked users (i.e. users with membership of more than one group).
* Monitors page failed to load in case an empty group (with no counters) existed.
* Replication tab failed to load after restart of a server when monitoring a master-master replication setup.