Adding "new round" action

This action will reset all estimations of all users.

When triggered, the function resets the local user's estimation to
false and sends an event that asks all other clients to do the same.
The result will then be synced among the clients by the normal update event.
Removing some unneeded bindings
Fixing style: consistent space after "function"
Making layout use more horizontal space on big displays
Removing all console.log calls