finished generalised database methods
Merge branch 'master' of github.com:WarwickPARSE/parse-client

Conflicts:
	PARSE/Database/DatabaseEngine.cs
	PARSE/Patients.sdf
Merge branch 'master' of github.com:WarwickPARSE/parse-client
Merge branch 'master' of github.com:WarwickPARSE/parse-client

Conflicts:
	PARSE/Patients.sdf