v1 of menu

the top menu with drop-downs in it’s v1 look. Interactions and
finalized look & feel coming up next
three versions of drop-down

which one do we like best? some of the files are extra and I’ll remove
them once we figure out which drop-down style we like best
Merge pull request #4 from bslugger/master

Drop-down menu stylesheets
Added path bar
Populated dummy alumni data
Revised path bar
Formatted course info view
BubbleChart: Adjusted bubble size and frame width
coursePath: updated UI layout and styling
Bubble chart: updated alumni view layout
PathBar: included sankey
fix font-size problem
fix conflict
add label name