[Frontend] channel land

[x] missing big tooltip channel details (yield via click on channel dots in map)
[x] zoom/reset control of map are not working
[x] hover tooltip channel dots, width of the tooltip is sometimes not wide enough for long channel names e.g. "#Ergonomic Granite Keyboard" (width of tooltip is ideally dynamic in relation to text length)
[x] channel names search should grey out not found ones, see 2 mockups/3f.png
[x] if map is zoomed in dot sizes should adjust size become slightly bigger.
[x] missing "back" button, left of page title
[x] missing groups control
[x] mouse double click on map should zoom in
[x] zoom in/out with scroll gesture doesn't work 100%, seems to be contradicting with page scrolling (if mouse is not over a viz element of the map)
[x] update footer, see https://github.com/moovel/slackviz/issues/25
[ ] map zooming and dot sizes, size changes should be smooth (if possible and not too much effort)

mobimeo / teamchatviz