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/PathToolBitGui.py

@@ -69,7 +69,7 @@ class ViewProvider(object):
             pixmap = QtGui.QPixmap()
             pixmap.loadFromData(png, 'PNG')
             return QtGui.QIcon(pixmap)
-        return ':/icons/Path-ToolBit.svg'
+        return ':/icons/Path_ToolBit.svg'
 
     def __getstate__(self):
         return None