Added infrastructure for our own builders
Merge branch 'dev' into canary

* dev:
  Button added to the empty chart Fixes #19
  Plotter is now a bit simplier (the chart is templates)
  Removed useless method in ErrorEllipseChart
  Removed the StyleAccessor
  Suppression of ErrorEllipseChartStyleAccessor
  Suppression of the ErrorEllipseStyleAccessor
Merge branch 'hotfix' into dev
Update readme.md
Update readme.md
Merge branch 'hotfix'
Conversion of the ErrorEllipseCustomizationPanel to a FXML Custom object
Merge branch 'hotfix'
Merge branch 'master' of https://github.com/CIRDLES/topsoil
Merge branch 'canary' into dev
Merge commit '6d7995611ae33ae1ab3d8f44e977202908e61ba7' into fxml-conversion

Conflicts:
	src/main/java/org/cirdles/topsoil/Tools.java
	src/main/resources/org/cirdles/topsoil/Resources_en.properties
Minor modifications to the new ErrorEllipseCutomziationPanel
Refactoring the NumberField. Its bound property can now be set as many time as we want.
Added math for bezier approximated concordia lines
ChartCustomizationPanel Switched to FXML !
Moving the ErrorEllipsesCustomisationPanel to a better place
Moved ChartCustomizationPanel out of ErrorEllipseChartCustomizationPanel
Finished basic concordia reimplementation

The Wetherill concordia is now composed of a series of Bezier curves.
The Tera-Wasserburg is implemented in the codebase but not available to
the user, as I still need to implement the axis switch.
Merge branch 'bezier-math' into dev
Merge branch 'hotfix' into dev