Add MAIL_SERVICE WAKEUP, SEND, MOVE, READ, DELETE MESSAGE actions

Add change in Email app to process following intents
from Bluetooth app, for MAP MSE support.

- com.android.email.intent.action.MAIL_SERVICE_WAKEUP
- com.android.email.intent.action.MAIL_SERVICE_DELETE_MESSAGE
- com.android.email.intent.action.MAIL_SERVICE_MOVE_MESSAGE
- com.android.email.intent.action.MAIL_SERVICE_MESSAGE_READ
- com.android.email.intent.action.MAIL_SERVICE_SEND_PENDING

Change-Id: I2b46265ba20c6f333c9e6d1b19ee73f5a066f1ff
DBHelper: Support upgrades from CM11

Add the new columns when coming from v126, add the old ones when
coming from any other value (or creating) so that they're there
when the feature gets reintroduced

Change-Id: I48ec042b30afbcefd43bdad0042147b6b0d2249f
Email: Update the widget preview image

Change-Id: I97fbbdbbc0223957eb2733a658454e94f46f9d42