plugin interface changed ("prepareForm" removed)
plugins do not raise exceptions anymore
first part of the partitioning plugin
device-specific stuff moved to CryptoBoxTools
WebInterfaceDataset replaces CryptoBoxWebserverSettings
WebInterfaceSites replaces CryptoBoxWebserverSites
input validation rewritten
clearsiler macro 'print_form_header' now expects the 'action' as a parameter