Access IR instrs from CFG traversal
Add of stepping IR passes into main window
retrieve the IR pass names to visualize them in the selector
Add of information property to update the #compile_information view in an easier way
ID for combobox in main view; Compiler Passes are correctly displayed (without stepping)
Set Combobox value to first pass
Moved compiler_passes_names up and factored converting into pass_to_s(); New properties current_pass, next_pass to enable stepping and redo
Enable explicit resetting of scheduler
run_passes_on_all_scopes as class method (without state);
Stepping with the new properties
select ir pass with check of ordering
Removal of stepping from IR viewer
Moved stepping_ir_passes to main view
Correct pass properties for CompilerData; stepping works againg (witout the selection of a compiler pass)