Load from database when offline

/assets/databases/ocw.zip: Updated to latest version with empty schedule and speakers tables.

/src/org/osuosl/ocw/DataBaseHandler.java: Added a method that returns the number of rows of a table.
When retrieving an event a new method is called Event.EventFromDatabase() to bypass date formatting problems from the Event constructor.

/src/org/osuosl/ocw/Event.java: Method EventFromDatabase that uses a different date formatter to match what is stored in the database.

/src/org/osuosl/ocw/Schedule.java: Changed speaker uri to testing host. Swapped out loading from cached file to loading from database. Some method name changes for consistency.