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/PathProbeGui.py

@@ -84,7 +84,7 @@ class TaskPanelOpPage(PathOpGui.TaskPanelPage):
 
 
 Command = PathOpGui.SetupOperation('Probe', PathProbe.Create, TaskPanelOpPage,
-                'Path-Probe',
+                'Path_Probe',
                 QtCore.QT_TRANSLATE_NOOP("Probe", "Probe"),
                 QtCore.QT_TRANSLATE_NOOP("Probe", "Create a Probing Grid from a job stock"),
                 PathProbe.SetupProperties)