Moved test into the plugin:

I used the man method of a separate Class for testing.
By now I will integrate the test to the main method of the plugin.
Added a test to DriftDetectionPlugin.
Test-image for DriftDetectionPlugin:

The Python script was used to create the test-image.
Added a test to CalibrationTransferPlugin.
Small changes to inline comments.
Added a test to SR_EELS_DispersionConfigurationPlugin and
SR_EELS_DispersionCalibrationPlugin.