UI update, new topology implementation refactor. No new feature. (#4457)
UI update, new topology implementation refactor. No new feature. (#4457)

* UI update, new topology implementation.

* Update license.
apache/skywalking,ascrutae/sky-walking,apache/skywalking,apache/skywalking,OpenSkywalking/skywalking,apache/skywalking,ascrutae/sky-walking,ascrutae/sky-walking,apache/skywalking,apache/skywalking,OpenSkywalking/skywalking,ascrutae/sky-walking,apache/skywalking