Removed unnecessary parameter from function definition.

In ToolBox.py:
- removed "step" parameter from arguements, not used.
Altered ClusterEvent to not depend on scaler.

This makes sense as we should no longer use scaler (it's not a constant).

Also modified the call to ClusterEvent in:
- AugustAnalysis.py
- ComputeAlignment.py
- pyEudetAnalysis.py
- pyEudetReconstructionOnly.py
Removed scaler from pyEudetReconstructionOnly.py.
Added check to pyEudetReconstructionOnly.py to not recluster repeated pixel maps.

Instead it just adds the clusters it found last time.
This makes the event loop run about twice as fast, for identical results.
Merge pull request #16 from sredford/master

General tidy of code and some speed improvements.
Simplification and improvements to resolution plots.

In pyEudetAnalysisOnly.py:
- added res plots for s1x1y1 and s3x2y2, previously unplotted
- used h1_style for all res plots
- removed the _cs series of res plots, they seem unnecessary given the others
- moved stuff around so it comes in a more logical order

- also removed unneeded scaler definition
Merge pull request #17 from sredford/master

Simplification and improvements to resolution plots.