Apply same correction as in #296628d
Adapt script for generating archives

Use tar.gz again, to preserve file/folder permissions
(important for cache folder; without this, the user
has to chmod it by himself, which sucks...)
Merge branch 'v0.9' of github.com:AKSW/cubeviz.ontowiki into comparing
extend compare.phtml with mockup for visualization area
adapt mockup for compareAction
Heavy refactoring; add formula parser and value adaption possible

Refactoring result in a more clear structure of classes
and functions. For instance move the function to create
merged datacube to DataCube_DataCubeMerger class, instead
of let it in VisualizationSetup.