various unicode fixes

Change-Id: Ia3a83b678a5084fd1d43b8cf513b296fdbde3d91
Reviewed-on: https://forge.frm2.tum.de/review/19198
Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de>
Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>

secop/modules.py

@@ -180,7 +180,9 @@ class Module(object):
 #                                      (self.name, k, e))
             # note: this will call write_* methods which will
             # write to the hardware, if possible!
-            setattr(self, k, v)
+            if k != u'value':
+                setattr(self, k, v)
+            cfgdict.pop(k)
 
         # Adopt units AFTER applying the cfgdict
         for k, v in self.accessibles.items():