hover position of map panel doesn't follow position of mouse

[xingwx]

It is not a major issue, but I think it is nice to improve.

Original jvector library provides a hover which can follows the position of mouse like this:

However, the hover in kibana map panel doesn't. It always display at the left top corner, no matter where your mouse is pointing

The reason of it is that kibana is using its own fix-positioned 'map-legend' instead of the original 'jvectormap-label'. However, both of them are defined in https://github.com/elasticsearch/kibana/blob/master/src/app/panels/map/module.html
though jvectormap-label is not being used. ( I understand the reason to use map-legend rather than 'jvectormap-label' is because 'jvectormap-label' doesn't support multipanel.)

Maybe we can improve it or at least clean up the unused code?

[spalger]

Hey @xingwx, while Kibana 4 doesn't include a map yet, we will make sure this issue doesn't exist in the map that is coming. If you experience any further issues please feel free to file an issue. Thanks!