* Clean up cache
* Hack to fix the tests with empty value attributes for genshi
Merge pull request #95 from LeResKP/develop

Fix cache and genshi template in the tests
Merge branch 'release/2.2.0.6' into develop
Merge branch 'develop' of github.com:toscawidgets/tw2.core into develop
2.2.0.7
Merge branch 'release/2.2.0.7'