Merge pull request #28 from van51/master

Added some more descriptions and fixed some errors
rename data to .md
update data version
update module to use http not ssh
drop data from demos altogether
Various refactorings

- move settings / urls over to main root
- cache loading of applications on startup
- drop sqlite file
- add option fro static data file loading
- drop useless shogun_demo dir
Some changes to have different toy data generator for classification tasks and some bug-fixes for the multiclass demo