refactoring the FdlPlotter class

git-svn-id: svn+ssh://controls01/siciliarep/svn/trunk/tango_client/ctrflyrtech_fdl/trunk@13113 a18efa20-c439-0410-bf20-9b91ec695b4c
add more statusBar messages to describe how the process evolve.
change tab when only diagnostics file is loading.
introduce a very small sleep when load files to make easy to update the gui information by other threads.

git-svn-id: svn+ssh://controls01/siciliarep/svn/trunk/tango_client/ctrflyrtech_fdl/trunk@13114 a18efa20-c439-0410-bf20-9b91ec695b4c
fix the angular unit convertion in formulas.
revision of the formular and facade's calculations as user request.
plots improvements about axis and legend.
working on allow the beam current to be changed.

git-svn-id: svn+ssh://controls01/siciliarep/svn/trunk/tango_client/ctrflyrtech_fdl/trunk@13115 a18efa20-c439-0410-bf20-9b91ec695b4c
remove (because it's unused) the CavVolt_mV. CavVolt_kV uses CavVolt (the amplitude from CavVolt_I and CavVolt_Q).
remove from the facade adjustments the CavVolt_mV, and also the BeamCurrent that will be placed in the main window.
new typo for file data transformation a 'newPhase()' and distinguish between these signals (Dephase,CavPhase,FwCavPhase) and the other loops fields.
fix the linear and quadratic fits: correct formulas are y=x*m+n & y=x**2/100*c+o.

git-svn-id: svn+ssh://controls01/siciliarep/svn/trunk/tango_client/ctrflyrtech_fdl/trunk@13119 a18efa20-c439-0410-bf20-9b91ec695b4c