Mobile: Lane overview hard to find

[richardolsson]

One user struggles to find their way to the lane overview, i.e. the bubble button at the bottom left. The user has read the tutorial bubbles, and even noted out loud that they understood the feature (however the button was not visible, see #197).

After the session, being asked about this, the user did not remember having read about the feature in the tutorial bubble, and does not remember reading it out loud.

This was observed during the July 2018 mobile user tests