All speaker information loaded as each event is loaded

/src/org/osuosl/ocw/Schedule.java: Ensures all necessary app data is downloaded at the same time by downloading the speakers as each event is loaded.
Fixed bug retrieving speaker ids from database

/src/org/osuosl/ocw/DataBaseHandler.java: Forgot to update the database handler to correctly retrieve events with multiple speaker ids.
Updated .apk to latest changes.