Organize directory and simplify test data

Move /WEB-INF/data to /data
Move app.gif to /resources
Greatly shortened .ttl and .json test data
Add code to display JSON graph

Add code to parse and display a JSON graph (test.html)
Add bigger data sets (graph-full.json)
Add license files for libraries used

Add licenses for:
  -Twitter Bootstrap
  -D3.js
  -D3 Slider
Add base code for zoom slider

Add d3.slider library
  -d3.slider.css
  -d3.slider.js
Add code to render a basic slider.
Fix bugs in slider and filter labelgroup nodes

d3.slider.js now works correctly with firefox and dragging reports
accurate numbers.

Slider is now horizontal instead of vertical and is fixed to top-left
corner.
When dragged, slider updates font-size automatically.

LabelGroup nodes are no longer displayed.
Fixed other node filtering logic -- was previously displaying all nodes
regardless of type.