CLI command and API call optimization

[standlove]

Now anything we enter in CLI will cause the whole page refreshed.

This is unnecessary. Failed commands and GET commands should NOT cause refresh.
And if the command won't affect the tree, no need to fetch the tree data as well.

The point is the front-end should make as less API calls as possible.

[standlove]

Similarly, when user add/update/delete values for list, set, ordered-set, map or string, no need to refresh the tree. You can get the updated-count for the changed key, and set the value to the affected tree node directly.

[standlove]

Actually the tree should only be reloaded in two cases: open the page first time and user clicks the refresh button.

In all other cases, try to update the tree nodes directly.