SSIFT: Parameter tweaks
findTemplate: Better debug output

The votes plot now has a correct legend.
The matches plot now uses the 'plotmatches' function from the sift
library which is better.
fixup! findTemplate: Better debug
labelTemplate: Parameter tweak in pariwise potentials
ImageSet.getLabels: Better plotting

The plots now appear immidiately each iteration.
Also, BBOX line with increased for clarity.
hw4.m -> runme.m

Renamed the main runfile as per the course requirement.

Also added an example run.
SSIFT: Disable some parameters

Don't need these to be input from outside.
q5: Image blending

Added code in runme.m to run an image blending demo.

Modified ImageSet.getLabels to return the transforms as well as labels.