Added tabs for all Mason campuses (Closes #28)
This adds tabs for the other Mason campuses, each of which displays its respective weather info.
Each weather data entry to the database now has a location key. This is used to check if data for a given location already exists or if new data needs to be requested.
getWeather function's parameters have to changed from
latitude, longitude to
location (a dictionary with name, latitude, longitude properties) to allow for easier database queries for location name.