Working operation blocks in the gantt chart; no arrows
Moved all position static fields anf methods to GanttChart;
some cleanups
Import of arrow graphicItem from PSS project
Proper ganttChart - finished
Rearranged results window
Working export to SVG
Cleanups
Handle changing time in operation to reflect it in GanttOperation
Export to latex done, not tested
Time grid and and line with Cmax added to gantt chart