some refactoring
refact calculateBounds
added filtering capability
added filters GUI
clic enabled on GUI filters
filter activated, still bugged
some cleaning
adjusted bubbles display
shortest route on top
activateAll small fix
corrected display modes bug
adding eslint, first shot at configuration and fixing first wave of errors
Merge pull request #14 from DavidBruant/eslint

adding eslint, first shot at configuration and fixing first wave of errors
eslint
some corrections
some corrections
some refactoring
big refactoring
simpler filter behaviour
some cleaning