WIP
Merge branch 'master' into CategorizedRendererUpdate
Numerous enhancements to graduated and categorized symbol renderers
Merge branch 'master' into CategorizedRendererUpdate
Removing compiler warnings
Merge branch 'master' into CategorizedRendererUpdate
Refactoring ready for manual update dialog.  Also improves labelling of StdDev classifications and better determination of decimal places to use
Implementation of graduated renderer breakpoint editor, minus SIP for editor
Merge remote-tracking branch 'upstream/master' into CategorizedRendererUpdate
Reverting class editor patch
Modified labelling to include prefix, separator, suffix.
Fixing null pointer on ramp bug
Merge pull request #1587 from ccrook/CategorizedRendererUpdate

Categorized and graduated renderer enhancements