Added clas AppliedAppliedTensorFunction with clas function .withNewIndex and uppdated general function with New index and isTensor
Written unittest for module tensor
Comment about metaclass
One more test
Written a to do list
Written comments and poked around
Improved findIndex
written renameDummyIndex and poked at renameDummyIndex_TensorTermList
Partial bug fix & moving all comments in list.py to the top.
made code and tensorLists more redable