Added a batch mode to the FindFoci plugin
Updated to add a batch processing mode to FindFoci.
Removed unused parameters
Make the image listing and opening methods public
Removed use of static minbin to allow thread safe execution
Added a multi-image mode
Added setting drop-down to allow the user to select from preset values.
Re-use existing results if they are available.
Convert the parameters to FindFoci options when reading. Thus reusing
the results should produce the exact same output.
Fixed re-use of results. However the result must be reloaded from the
saved file even when freshly calculated to ensure consistent round-off
error.
Ensure the optimiser returns the same result when calculating or reusing
results.

Correctly record the optimiser options to file
Ensure listener dialog is initialised
Do not use the reuse flag in the all results filename
Fixed ranking by advancing the score variable for equality matching
Ensure all the scoring modes match the old FindFoci optimiser scripts.
Ensure the mask title is recorded in the results file header.
Removed Av,SD print statement
Add option to make the match distance relative or absolute
Updated the manual for the FindFoci batch plugin and the FindFoci
multi-image optimiser.