Make exclude filters and add mutliple filters with nice labels

[adriaandotcom]

It would be very useful for customers to be able to exclude a certain filter. While we are at it, maybe make it more clear for the user what is selected.

We could add the filters above the lists and below the chart. Like this:

Not sure how we can select multiple items from the same thing. For example get all visits from referral google and duckduckgo. Maybe by clicking ALT and another item? Or any modifier key, because it's always hard to remember which one is which. Just add them all for selecting multiple.