Add Units to mean depth value

Fixes #445

Signed-off-by: Gopichand Paturi <gopichandpaturi@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Revert "Switch profile button events, clicked to toggled"

This reverts commit 63f7f37e4617b15af9bbd1894d529da2c22a34f1.

For odd reasons this appears to make the mean depth line disappear. This
will require some further analysis, but for now I'll just revert it.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>