several improvements and bugfixes

+ rework GUI
  - include a combobox for selection of visibility
  - include a checkbox wether validation should be done in the client
  - remove unused lineEdit
+ improve datatypes
+ improve tests for new descriptive data
+ metaclasse: fix overlooked read_* or write_* func's
+ improve polling
+ Introduce new ErrorClasses
+ dispatcher: use new features of datatypes + PARAMS
+ improve lib
+ autopep8
+ first working version of MLZ_entangle integration
+ split specific stuff into it's own package (MLZ,demo,ess)

Change-Id: I8ac3ce871b28f44afecbba6332ca741095426712

etc/demo.cfg

@@ -10,34 +10,34 @@ framing=eol
 encoding=demo
 
 [device heatswitch]
-class=devices.demo.Switch
+class=secop_demo.demo.Switch
 switch_on_time=5
 switch_off_time=10
 
 [device mf]
-class=devices.demo.MagneticField
+class=secop_demo.demo.MagneticField
 heatswitch = heatswitch
 
 [device ts]
-class=devices.demo.SampleTemp
+class=secop_demo.demo.SampleTemp
 sensor = 'Q1329V7R3'
 ramp = 4
 target = 10
 default = 10
 
 [device tc1]
-class=devices.demo.CoilTemp
+class=secop_demo.demo.CoilTemp
 sensor="X34598T7"
 
 [device tc2]
-class=devices.demo.CoilTemp
+class=secop_demo.demo.CoilTemp
 sensor="X39284Q8'
 
 [device label]
-class=devices.demo.Label
+class=secop_demo.demo.Label
 system=Cryomagnet MX15
 subdev_mf=mf
 subdev_ts=ts
 
 #[device vt]
-#class=devices.demo.ValidatorTest
+#class=secop_demo.demo.ValidatorTest