Add tab to list all the children a node has, allow re-ordering

Problem/Motivation

• Where can i see list of all child pages
• Where can i do order/reorder of child pages

Proposed resolution

• add New tab to list child page of a node, same as we are doing for Add Child Page tab.
• it would be great if we can order/reorder the child pages as well in Child Page List

Remaining tasks

No

User interface changes

Create tab to list all the children a node has, allow children re-ordering. Allow to enable/disable this extra tab feature as this may cluster the action tab region.

API changes

No

Data model changes

No