Feature/ux fixes (#167)

* fix card toggle

* fix bug and bar marker

* reinstate timeline arrows

* adjust (hard to interpret) category y calculation

* shadows for markers as well

* return markers when there are no categories

* remove year in timeline

* make notifications optional

* WIP: render hovered counts

* show number on hover

* lint

* revert to filteredLocations

* linting

* return mapClustersToLocations

* 💄

* lint

Co-authored-by: efarooqui <efarooqui@pandora.com>

src/components/TimelineAxis.jsx

@@ -20,8 +20,8 @@ class TimelineAxis extends React.Component {
       sndFmt = ''
     // 1yr
     } else if (this.props.extent > 43200) {
-      sndFmt = '%Y'
-      fstFmt = '%d %b'
+      sndFmt = '%d %b'
+      fstFmt = ''
     } else {
       sndFmt = '%d %b'
       fstFmt = '%H:%M'