Events with no speakers null pointer fix, speakers in memory hash map fix.

/src/org/osuosl/ocw/DataBaseHandler.java: Fixed null pointer when an event with no speakers is updated.

/src/org/osuosl/ocw/Schedule.java: Moved adding speakers to the hash map to after they have had all their values assigned.
New .apk with recent changes

/ocw-android.apk: Updated to latest version.