Created an Image class hierarchy for easier manipulation.
Changed GUI mode to display Kinect Output on screen.
Created Workers to write captured images to files so that the capture doesn't stutter.

Signed-off-by: Vinicius Dias de Oliveira Gardelli <gardelli123@gmail.com>
Fixed a rebase error.
Fixed NCC calculation.
Added capture options to interface.
Created progress dialog to display capture's progress.
Created CalculateErrorScore method in Image class to calculate the error score between two images.
Created a FileWriterService to write images to disk on a separate thread.
Fixed GLViewer to make it update on every camera read.
Added compilation flag to eliminate buggy "SubImage" compilation for the time being.

Signed-off-by: Vinicius Dias de Oliveira Gardelli <gardelli123@gmail.com>