Merge pull request #7 from tpoulsen/dev

Merging dev with major changes to individual patient graphing.
Requirements updates
Moved varr modules into repo.
Fixed bug with cohort searching.
Fixes to sql generator in protein_explorer.
Fixed bug with cohort selection prior injections.
Removed config.
Localized nvd3 css
Bug fix in protein explorer.
Doc for ∆VA filtering
First functional month +- 10 day filter.
Fully functional x month +- 30 days in filters.
Fixed bug in password reset related to db migration.
Backend refactoring.
Refactoring
Fixed freezer search issue. Refined home page stats display.
Dir structure cleanup.
Cleaned .gitignore
Python path modified to include ./src