Various helper fixes included.

1. DismissDialogsInstrumentation
a. wait for launcher at start
b. default quitOnError to 'yes'
2. GoogleCameraHelperImpl
a. new dogfood dialog to dismiss
b. look for errors and assert failure
("Can't connect to the Camera")
c. assert failure if shutter button is unusable
d. rename and reorganize
3. GmailHelperImpl
a. multi-panel support fix
b. assert failure if poor WiFi
c. mysterious new dialog addressed
d. improve reply execution and recovery
4. MapsHelperImpl
a. correctly perform full searches

Change-Id: If97184a1e88b074409e9f012c39a978e7f29ae54