Add OTB Discrete Gaussian Image Filter
add otbleeimagefilterprocessor
added ortho rectify processor
added panning support on the viewer's scrollable widget..
imporoved a bit the performance of loading images on the viewer processor
added panning on the viewer's full view widget
fixed a bug,the zoomable viewe widget gets updated when the full view is getting panned
fixed a bug, now the scrollable view widget follows the zoom value on the zoomable view widget
fixed a bug, now the scrollable widget zooming respects the image margings
fixed bugs,when reloading images sometimes the viewer crashed
cleaned up the code related to the viewer
added the functionality for showing the pixel info data on the viewer.
fixed a bug,the viewer no longer crashes on mouse move event on an empty scrollable widget
now the channel data ,gets updated by the current selection on the panel widget
fixed a bug,changing between greyscalde and rgb mode on the viewer was causign crashes
fixed a bug,the channel mode radio button is selected according to the input image channel list
fixed a bug,crash when the focus region moves on the space outside the image boundaries
fixed a bug,no longer the viewer crashes when an empty imageviewer is being handled
fixed a bug,now the pixel info data are shown when rendering channels are less than 3
fixed a bug, fixed errors on the pixel value information on the pixel info widget on the viewer