Styled sidebar menu, added menu js functionality - no server communication
added basic server communication
Merge branch 'research-service' of https://github.com/unfixed/femr into feature-graph
finished UI functionality
Added fetching list of single vitals from date range
Fixed issue with random graph requests not working
Added framework to graph certain vitals from database
Staged deleted files
added method in dateUtils to return age as float value rather than just strings
added method for getting all patient ages
created ResearchItem class, this is meant to serve as a common data model for all research data requests.