beremiz

Runtime: add GetVersions() call to PLCObject, use it in web settings and expose it in WAMP and Pyro.

Note: WAMP changes are untested
<?xml version='1.0' encoding='utf-8'?>
<BaseParams xmlns:xsd="http://www.w3.org/2001/XMLSchema" IEC_Channel="2" Name="py_ext_0"/>