add full Javadoc to Application and Database

git-svn-id: https://markus.cdf.toronto.edu/svn/csc207-2014-09/group_0909@107 8153ec5e-17d7-4962-8641-23ff7c14a8d4
add Javadoc to Patient

git-svn-id: https://markus.cdf.toronto.edu/svn/csc207-2014-09/group_0909@108 8153ec5e-17d7-4962-8641-23ff7c14a8d4
add Javadoc to Visit

git-svn-id: https://markus.cdf.toronto.edu/svn/csc207-2014-09/group_0909@109 8153ec5e-17d7-4962-8641-23ff7c14a8d4
fix ° symbol in VitalSigns

git-svn-id: https://markus.cdf.toronto.edu/svn/csc207-2014-09/group_0909@110 8153ec5e-17d7-4962-8641-23ff7c14a8d4