[ADMIN] make use of self._admins_level in acquireCmdLock method instead of constant value
[ADMIN] replaced deprecated handle() method with onEvent()
[ADMIN] refactored plugin syntax: get close to PEP8
[ADMIN] let the plugin use the new event dispatcher
[ADMIN] updated plugin version and changelog
Merge pull request #174 from FenixXx/release-1.10

[ADMIN] refactored syntax and minor improvements