User interface fixes and many new studies available

This version adds more information about submitted data enrichment to the FAQ section. It also fixes some user interface issues, such as broken links to dbSNP and filters not being sorted alphabetically.

71 short variant studies are now available in the study browser (that's 25 more than the previous release!), some of them from new species. The variant browser also includes 3 new species: rice, blood fluke and rat thread-worm.