fix: update card position and votes with sockets

[nunocaseiro]

Fixes #825

Proposed Changes

Note: this should solve the majority of issues regarding performance when many people are moving or voting the cards in real-time. This should be tested in the live version

• When voting in a card or moving its position now a socket message is sent to all users that are seeing the board and receiving that they will update the board locally instead of making a board request
• If some error occurs in the backend during these updates a message is sent to all users to refetch the board. (this may not be necessary)

This pull request closes #825