Add 'Chart' and its missing dependencies

This pull request adds the following packages:

* Chart (0.17)
* data-accessor (0.2.2.3)
* data-accessor-template (0.2.1.10)
* utility-ht (0.0.9)

the built packages for i686 and x86_64 can be found at: https://sites.google.com/site/glgarchhaskell/packages

I am willing to maintain, i.e. reupload when new versions are available