Host test plugins: added copy pligins, and removed Selenium and eACommander dependency from Test API
Host test plugins: Added MPS2 and Firfox copy methods (both not stable and require further development)

Host test plugins: Added 'stable' attribute to each plugin, by default all plugins are not stable

Moved all MPS2 related functions to MPS2 plugins in host test directory
Host test plugins: Added generic error printing to host test plugin base class