Export to Graphics File Item is added to diagram context menu. Slot was realised for this menu.
Basic graphics export. Not works properly.
Further development of export graphics
Further development
Basic functions works for export diagram to png graphics
New diagram export dialog is realised.
Realised controls in export diagram dialog. Need to add scaling of diagram.
Added scaling and basic export to svg for diagrams
Added messages for error and sucess export. Removed debug printing
Merge pull request #26 from ra3xdh/ExportFigures

Export diagrams to PNG, JPG and SVG format