Blender Git Loki

Generalized unique_editbone_name to be useable if a name change after the bone has been added to the list (this could probably simplify some code in editarmature, I haven't done that yet).

First pass for retargetting template's renaming magic. For now, in new retargetted bone's name: %S (side) and %N (number) will be replaced by user defined strings.

Will need to experiment on how useful that is and how it could be better.