UI Skin changes and color changes
Current source GUI and behavior improvements. 
Bug in current source - since current is a abstractmodelconfig it gets
associated with a slider which clamps incremental values. It should be a
meter instead and not be associated with a slider which is a GUI
artifact.
Meter notion introduced. Meters not directly conneted to GUI
Refactored controlpanel to modelcontrols
copied json files to assets in android