BoardManager: Upgrade board manager to automatically
generate the string for the channel banks.
BoardPlugin: changed variable typedef to Qt ones.
BoardManager: improve comment.
BoardManager: Reinsert "virtual" keyword.
BoardManager: Implemented more compact way of setting channels.
Merge pull request #979 from kubark42/board-manager-channel-banks

[BoardManager]: Upgrade board manager to automatically generate the string for the channel banks.