improve facade's attribute reading

git-svn-id: svn+ssh://controls01/siciliarep/svn/trunk/tango_client/ctrflyrtech_fdl/trunk@12883 a18efa20-c439-0410-bf20-9b91ec695b4c
attempt to simplify the signalling calculation by the parser module and the gui map and plotting characteristics. This way there a single point of modification in case of changes in those calculation output

git-svn-id: svn+ssh://controls01/siciliarep/svn/trunk/tango_client/ctrflyrtech_fdl/trunk@12884 a18efa20-c439-0410-bf20-9b91ec695b4c
new signal processor class to do the calculations between what has been received from the file and the parameters from the facade. Add facade's suport for couple & offset.
Introduce a unique point to configure the key words for signal names. Distinguish between signals comming from the file, to the ones that uses facade'a attributes and other with more complicated formulas to evaluate.
Add more field in the facadeAdjustments with the newer parameters
Improve signal processing method.
Avoid useless replots made by the time&decimation widgets.
prepare signalFields with outsider names. Name file processor threads
Merge remote-tracking branch 'github/master'

Conflicts:
	FdlFileParser/FdlFileParser.py
	ctrf_llrf_fdl.py