Highlight signature of flux-commands

[TobiasNx]

The signature is the central info when constructing an FLUX workflow it shows which input is needed and what output is created by an modul. This gives orientation which modul can be combined.
It should be highlighted so one can combiner flux moduls more easily.

change-id
---------
- description:	By default changes the record ID to the value of the '_id' literal (if present). Use the contructor to choose another literal as ID source.
- options:	keepidliteral (boolean), idliteral (String), keeprecordswithoutidliteral (boolean)
- signature:	StreamReceiver -> StreamReceiver
- java class:	org.metafacture.mangling.RecordIdChanger

[TobiasNx]

Ideas:

• sort all moduls by input
• split singnature to in and out
• work with color highlighting
• set as first attribute

[dr0i]

I don't understand the ideas - an example would be good.