Monteverdi improvements

This story gathers improvements listed in the old wiki :

• Display radar images

• Clarify the numbering of bands. Zero or one based? Currently the band selector drop down menu shows entries like: "1: Band 0". (note: I think it should be all 1-based to follow QGIS and GDAL convention: http://gis.stackexchange.com/questions/219886/is-it-convention-to-index-a-raster-band-from-1?atw=1)

• Read Band names and band wavelength

• Allow to select the interpolation modes (nearest, bicubic, etc.). Most wanted from users is OpenGL bi-cubic texture filtering (currently, only bi-linear) when zooming more than 1:1

• Add a (rectangular) Region Of Interest selection tool

• Display preview of OTB-applications result(s)

• Add an angle/distance/surface measure tool

• Support Ice viewport rotation feature

• Full screen mode

• Layer stack right click menu:

  • Add a button remove all layers but not the selected

• Support the aux.file of GDAL to store Histogram and Min/Max value to avoid recompute it each time or store GCP to allow open the data into QGIS correctly

• Support image with palette

• Add a widget with statistic of the image (Mean, Variance, Sum, Nb of ValidPixel, ...)

• Add a widget with general information about the selected image (size, nb bands, origin, proj...)

• Histogram enhancements:

  • Add the capability to compute the histogram at full resolution
  • Optionally display the computed RGB histogram
  • Option to compute color dynamics based on current view, not entire image, and auto update on zoom and pan
  • Ice should do the histogram computation instead of Monteverdi (GDAL can also do it)
  • Export the exact histogram to a file

• Add warning message in Monteverdi when trying to open an image with a large number of images (> 50 bands for instance)