Inconsistent attribute and method names

Several issues were faced while trying out counterfit.

Upon starting counterfit and providing the command `new -n test`, an error 'AttributeError' was encountered.

- `new.py` referenced an attribute named `targets_path` in `config.py` but `config.py` does not seem to have an attribute named `targets_path` declared or defined
- This was resolved by adding a line to declare an attribute named `targets_path` with the path directed to the "targets" directory in `config.py`

The above issue appears to be the same issue as the first bullet point in issue #82

After resolving this issue, several other issues of similar nature were encountered:

- `new.py` referenced `add_targets()` in `state.py` but `state.py` do not any method named `add_targets()` declared or defined
- `new.py` referenced `load_targets()` in `state.py` but `state.py` do not any method named `load_targets()` declared or defined

After resolving the above issues, another exception named 'TypeError' was encountered with the message: 'NoneType' object is not callable. This issue was traced back to be from line 77 of `new.py`.

Other than the `new` command, the command `predict -i range(10)` (as mentioned in `DEMO1-satellite.md`) also does not produce the same output as documented. This appears to be the same issue as the second bullet point in issue #82