added functions for visualizing results of geometric quality grid and polygons calculated by COREG class

COREG:
- added show_image_footprints(): a function to show a web map containing the calculated polygons within Jupyter Notebook

DESHIFTER:
- correct_shifts(): bugfix for showing warping progress bars in quiet mode

Geom_Quality_Grid:
- added view_results(): a function for showing a map of the calculated quality grid with the target image as background
- added view_results_folium(): a function for showing a web map of the calculated quality grid with the target image as background (for Jupyter Notebook)