Improve build stages (#3744)

* travis precache

* rb change

* remove ut

* add cache warm up

* Prepare cache fix

* add test

* use env variabble to tag

* use env to label stages

* move lint step at start

* use dist for e2e

* upload dist in alfresco

* modify permissions

* travis script node

* remove polyfills

* revert some changes

* fix demo shell run test

* solve download

* revert debatable gallery change

tools/export-check/export-check-config.json

@@ -4,6 +4,7 @@
     "export-2.0.0.json",
     "export-2.1.0.json",
     "export-2.2.0.json",
-    "export-2.3.0.json"
+    "export-2.3.0.json",
+    "export-2.5.0.json"
   ]
 }