Removed old .mos scripts to run test of electrical components
Added first test case for the unit test
Fixed error in the dymola script command contained in the model
various edits both to the network example (IEEE 34 nodes) and to some html documentation, now the unittest has 0 errors when run with the Electrical package only (just 1 script... others need to be added)
Other test and script added to the testsuite
Added a test and fixed an old one
Other DC tests added to the testsuite
Added other test and updated model