1) Remove duplicate logic.
2) Child node specific logic should be inside the child node and table node gets the required information from the respective child node.
Note:- Refactoring of columns node still in progress.
Fixes#4807
1) Dashboard -> Server Activity grid: terminate the session, cancel active button not navigable using tab key.
2) SQL -> If the focus inside code mirror control tab navigation not working.
Fixes#4930
1) Suppress ESC key presses in Alertify dialogues when the come from Select2 controls (It also closes the alertify dialog when user try to close Select2 using ESC key)
2) Do not allow Tabindex focus on Switch control when it is disbaled
3) Tab keyboard shortcut navigation does not work in wcDocker iframe.
Fixes#4935
