fix
* Improved placement
Add hash change and linkable majors
Add linkable major views
Use linkable major graphs
Added styling for Nodes and nice colors for Edges
* Guard against endless recursion in Node coloring
last fixes
removed duplicate code, improved layout and styling, added bootstrap to fairy_tree.html, added clearing of the info panel when major is changed
* Added rudimentary version of admin panel, simply listing available tags without duplicates
* Refactoring: functional style of removing duplicated tags