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/Gui/TaskDlgPathCompound.cpp

@@ -53,7 +53,7 @@ using namespace Gui;
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
 TaskWidgetPathCompound::TaskWidgetPathCompound(ViewProviderPathCompound *CompoundView,QWidget *parent)
-    : TaskBox(Gui::BitmapFactory().pixmap("Path-Compound"),tr("Compound paths"),true, parent)
+    : TaskBox(Gui::BitmapFactory().pixmap("Path_Compound"),tr("Compound paths"),true, parent)
 {
     // we need a separate container widget to add all controls to
     proxy = new QWidget(this);