use app contextID
check for null
fix resource folder
Merge pull request #7 from arraydev/minor_fixes

Minor fixes (I pull it but without the null check in TargetProductSelector)
removed null check but changed the cast
test ignored which which fail, should be activated again later
started uncertainty visualisation experiments
Uncertainty visualisation:

- Uncertainty Manipulation tool window now basically works
- New VISAT plugin that generates two types of uncertainty fakes
Uncertainty visualisation:

- Uncertainty overlay now taken from uncertainBand.imageInfo
remove confidence bands
added confidence bands
inverted alpha ramp
UncertaintyManipulationToolView --> UncertaintyVisualisationToolView
Fix
Added mode option to uncertainty visualisation tool window
Added autogrouping
All four uncertainty modes implemented for demo
several ancillary roles are read from the image manager
use code from merge with uncertainty-visualisation branch