Changed orthography of the BlockType of the TemperatureSensorBlock
to match all other blocks: first letter small, first word
defines whether Block is sensor, operator or actor.
Removed unused imports.
Modified JavaDoc and names of some methods.
Created new Class BlockID to uniquely identify function blocks.
Now each block can keep its UUID and have the same UUID as
other blocks, as long as they were derived from the same
block model.
I also send the BlockID in the ApplicationList response message,
which is not working yet due to some serialization problems.