Updated logviz to support offline viewing

Signed-off-by: Brandyn A. White <bwhite@dappervision.com>
1. Changed activity in BS to be MainActivity and not WeakRef<MainActivity> (was unnecessary)
2. Removed default raven log url
3. Have socket client kill the reconnect thread if we have shutdown
4. Change socket client's reconnect time to .5 sec from .1 sec

Signed-off-by: Brandyn A. White <bwhite@dappervision.com>
Updated cameraVideo to have a callback

Signed-off-by: Brandyn A. White <bwhite@dappervision.com>