Few features to improve the game play

[ananduvt]

Features

1. Ability to change the mode to sandbox to test the current setup for different type of traffic. Or ability to export and import the architecture between the modes
2. Ability to select the multiple nodes and do operations like link/unlike , move node so on. Also when a node is selected , need link hold option to avoid clicking the same node again and again to create link to from same node
3. In select mode, when a node is selected , highlight all the link from it and to it in different colours.
4. In link mode, when a node is selected , highlight all the nodes that the node can be linked.
5. Need a dashboard to view resources, load, tier, queue, health statitics
6. Fix UI windows with scrollable contents, to avoid clipping

Issues

1. Side window issue with sandbox mode

Examples
Survive mode - Dashboard over flows to down

Sandbox mode - Dashboards overlaps