Merge pull request #67 from aheld84/master

removes unused, outdated .project and .pydevproject files
Merge pull request #70 from aheld84/master

fixes #69 (python2.6 compatibility: unittest.TestCase has no assertGreat...
adds `parseFCUnit` function to pyphant.core.Helpers module

Docstring:

```python
def parseFCUnit(s):
    """
    Parses the string/unicode s into a float or a Quantity.

    Returns a float or a Quantity or raises an error.
    See quantities package for possible errors.
    """
```

also adds tests
fixes parts of #68 (input of units broken ...

... in ImageLoaderWorker and probably elsewhere)

* fixes the parameter input for the ImageLoaderWorker
* adds tests