Manage revolution pi saved settings in an own class

Start a complete new setting file with right naming. Import all old
saved connections from old settings file. Revolution Pi saved settings
are now in an own class with all properties and default values. All
modules are using this new setting class, which support the save
function.

setup.py

@@ -8,7 +8,7 @@ from setuptools import find_namespace_packages, setup
 
 setup(
     name="revpicommander",
-    version="0.9.10rc1",
+    version="0.9.10rc2",
 
     packages=find_namespace_packages("src"),
     package_dir={'': 'src'},