Histogram, Parallel Coord and refactor

Moved Histogram to VISAN.Plots namespace
Added Parallel Coordinates plot
Fixed some closure and context problems
Add parallel coordinates to index.jsp
Scale reverse lookup, basic color brush
Formatted demo data, added demo parallel coord plot
Added selection to Scatterplot
Made APP globally available to enable observation
Fixed drawing of parallel coordinates
Application now holds a reference to loaded modules (also for observation purposes)
Added boxplot
Fixed selection issue
Removed log messages and added axis descriptions
Variable name refactor
Clear layer of histogram before drawing
Fixed Scatterplot scales and selection
Removed unnecessary comments and code
Added custom axis orientations
Added parallel coordinates axes
Added 1-D selection
Added selection to parallel coordinates plot
Bugfix