[beta] Backports (#5299)

* Fix FireFox overflows (#5000)

* Max width for container

* Set min-width

* Switching ValidatorSet (#4961)

* add multi validator set

* nicer comment

* validate in constructor

* reporting

* Avoid clogging up tmp when updater dir has bad permissions. (#5024)

* force earliest era set in snapshot restore (#5021)

* v1.6.5

* Fine grained snapshot chunking

* Ropsten revival

js/src/ui/Container/container.css

@@ -24,6 +24,7 @@ $transitionAll: all 0.75s cubic-bezier(0.23, 1, 0.32, 1);
   flex: 1;
   height: 100%;
   padding: 0em;
+  max-width: 100%;
   position: relative;
   /*transform: translateZ(0);
   transition: $transitionAll;*/