close popup on second click in map

[stefanocudini]

disable popup on second click and re-enable on the third click

Here is an example of logic: https://github.com/Keplerjs/Kepler/blob/master/packages/lib/client/L.Cursor.js

[stefanocudini]

• [x] works for router popups
• [x] work in progress for any other popup(for each layers)

[Ghoster981]

I've started to work on it (here) but it's needed a better way too keep track of which popups are open.