lokdocview: use GtkDrawingArea for drawing tiles
lokdocview: use GtkDrawingArea for drawing tiles

Change-Id: I1a3d8a9229f416418f0f3e9c720b78af09b35978

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core