Update permissions and preferences for ExampleActivity

[danesfeder]

This updates the test app to request request location updates after permissions have been granted for the first time. It also updates ExampleActivity to update the offline version in onResume and only if it's different from the previous version.

I also consolidated the offline settings / download in the navigation preference fragment. If we'd rather have the download activity in the list and the offline disabled in the settings list, we can move that back. I just thought it made sense to have everything together from an app user perspective.

Permissions:

Download:

Route:

cc @Guardiola31337 @kevinkreiser

[codecov-io]

Codecov Report

Merging #1581 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1581   +/-   ##
=========================================
  Coverage     22.56%   22.56%           
  Complexity      694      694           
=========================================
  Files           189      189           
  Lines          8230     8230           
  Branches        606      606           
=========================================
  Hits           1857     1857           
  Misses         6190     6190           
  Partials        183      183

[Guardiola31337]

Great work @danesfeder 👏

I do also think that the flow is clearer for end users.