Path: Change filenames in the rest of the Path code

Reflects changes in 
* PathOpGui.SetupOperation()
* GetResources()
* sPIxmap
* pixmap
* *.UI files

Also contains minor translation context renames (these were edits made near to original intent of this commit)

src/Mod/Path/PathScripts/PathIconViewProvider.py

@@ -62,7 +62,7 @@ class ViewProvider(object):
             self.editCallback = state['editCallback']
 
     def getIcon(self):
-        return ":/icons/Path-{}.svg".format(self.icon)
+        return ":/icons/Path_{}.svg".format(self.icon)
 
     def onEdit(self, callback):
         self.editModule = callback.__module__