Attach decoding to blocks

[andynoack]

Labelsets

• Labelsets usually determine a message type, whereby each message type can have different encodings in practice. Therefore combining decoding and labelsets may be ergonomical.
• Usability (GUI design) is questionable
• Decoding will normally chosen before thinking about labels

-> No

Blocks

• GUI design is simpler than with labelsets
• When several blocks with different encodings are selected, show "..." element in combobox.
• When nothing is selected, ask for confirmation whether the encoding of all blocks should be changed. At least for 10+ blocks.

-> Yes