Board: Fix moving of cards unpredictable after first move
See #24 (closed)
stackId on each card did not change when the card got moved, resulting in unpredictable behavior when moving the card for a second time and making the card disappear when moved into its own stack after a first successful move.
- Refresh board after moving card to another stack to avoid inconsistency of local data
- Only set first stack as current stack on initial mount