Fix rounding errors in two colormap implementations
Added Overview Panel
Fixed two toString() implementations
Added ref. to Bernard14
Merge pull request #17 from simonthum/master

Use Java 8
More interactive config in JND view
Add tooltips in decomposed views
Fixed some namings
Fix comparison view
Respect direction of quality metric in comp. view
A few rendering tweaks in 3D View and comparision view
use java 8 consistently

Avoids a warning, and if we need it for metrics we
always need it.
update pcolor for followups
add CAM02-UCS as a plotting space

actually replaces HSB. The inversion seems buggy but visually
the difference is not that big.