don't clear cache before every update script
don't clear cache before every update script

- in 99% of all cases this is not needed
- this greatly improves performance

darimpulso/koala-framework,yacon/koala-framework,kaufmo/koala-framework,darimpulso/koala-framework,yacon/koala-framework,koala-framework/koala-framework,Sogl/koala-framework,koala-framework/koala-framework,Ben-Ho/koala-framework,Sogl/koala-framework,nsams/koala-framework,kaufmo/koala-framework,kaufmo/koala-framework,nsams/koala-framework,nsams/koala-framework,Ben-Ho/koala-framework,yacon/koala-framework