Dynamically switch board

Prevent page reloading when switching or creating board.

Before	After
Switch_board_-_before	Switch_board_-_after

To test locally

These steps should be tested for a project issue board, a group issue board and an epic board.

1. Load a board
2. In the top left dropdown, select Create new board
3. Expand scope and add some options
4. Save
5. Ensure the filter bar gets updated with the filters selected when creating the board
6. In the top left dropdown, select another board (an EE licence is required for multiple boards and epic boards)
7. Ensure the filter bar is updated

Related to #355130 (closed)