all: rename parameters to accessibles in module classes

+ make accesses to <module>.parameters work again

Change-Id: I91c09b0f9f5f28d78cd644f83a96c8772e5977e5
Reviewed-on: https://forge.frm2.tum.de/review/20249
Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>
Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
Tested-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>

test/test_modules.py

@@ -23,7 +23,7 @@
 from __future__ import division, print_function
 
 # no fixtures needed
-import pytest
+#import pytest
 
 from secop.datatypes import BoolType, EnumType, FloatRange
 from secop.metaclass import ModuleMeta
@@ -138,10 +138,6 @@ def test_ModuleMeta():
             assert acs is not None
         else: # do not check object or mixin
             acs = {}
-        with pytest.raises(AttributeError):
-            assert baseclass.commands
-        with pytest.raises(AttributeError):
-            assert baseclass.parameters
         for n, o in acs.items():
             # check that class accessibles are not reused as instance accessibles
             assert o not in params_found