Bugfix: Due to reformat code/optimize imports a syntax error was introduced
Enhancement #26: Added content-negotiation-manager

Added support for custom content-negotiation-manager to Spring MVC using path
extension (.csv/.json, etc) for following media-types:
   - JSON
   - XML
   - JSON
   - HDF5

Futhermore Beans for PhenotypeData and PhenotypeValue as well as
HttpMessageConverter added for converting into csv. Custom Jackson Mapper for
ChrGWAData added.
Enhancement #26: Support for downloading phenotype values and pvalues added

The flat buttons were replaced with bootstrap buttons and support a
DropDownButton was added to support downloading following resources:
 - Phenotype Data (JSON)
 - Phenotype Data (CSV)
 - PValues (JSON)
 - PValues(HDF5)
 - PValues (CSV)

 These changes fixes issue #26.
Enhancement #26: Add support to download phenotypedata from phenotype view

Users can now also download the phenotypedata from the PhenotypeDetailView.
It will contain all statistictypes.
Merge branch 'download_buttons'
Bufix: Removed flat button style

The flat button style (red, grey, blue) was removed in favor of the bootstrap style