[fix] Blockchain explorer: optimize refresh using a block id;

[fix] UI: fix top refresher background, in wallet and identity views;
[fix] Websocket: make sure socket is not closed, before reuse it;
[enh] ES (user and page): allow user to send like and abuse report.
[enh] ES Graph: use the optimized extension controller, for extension point;
[enh] ES Graph: remove stats button, on the identity view (keep it onl in the TX history)