ptm position list for each ptm peptide

src/grouping/ptm/ptmgroupingexperiment.cpp

src/grouping/ptm/ptmgroupingexperiment.h

src/grouping/ptm/ptmsamplescan.cpp

src/grouping/ptm/ptmsamplescan.h

src/gui/ptm_island_list_view/ptmislandlistwindow.cpp

src/gui/ptm_island_list_view/ptmislandlistwindow.h

src/gui/ptm_peptide_list_view/ptmpeptidelistwindow.cpp

src/gui/ptm_peptide_list_view/ptmpeptidetablemodel.cpp

src/gui/ptm_peptide_list_view/ptmpeptidetablemodel.h