cleaned up index.html
Removed the most obvious trash ; put directives into own files
1500 lines left - still trying to reach the goal of abstracting the main app logic to less than 500 lines
mover data source stuff to DataSourceManager
650 lines towards the goal
650 lines towards the goal
650 lines towards the goal
650 lines towards the goal
650 lines towards the goal
650 lines towards the goal
Toggle buttons on the facet tree working again
fixed a semicolon