This fixes #145
This fixes #88
Implemented methods to remove and count remote...

... tracks
This fixes #146
This fixes #147

The dashboard now acts as startscreen of the app. This means that if you
click the back button on the dashboard at any time you will exit the
app. To achieve this behavior, the backstack is emptied if the dashboard
is selected. Also, it is checked now before selection of a view, whether
the view is already shown on the screen.
Revert "This fixes #147"

This reverts commit 36fa3b1a3710752c0f46ce818c215e9fa5a8c069.
Merge remote-tracking branch 'upstream/develop' into develop
Re-do: This fixes #147

The dashboard now acts as startscreen of the app. This means that if you
click the back button on the dashboard at any time you will exit the
app. To achieve this behavior, the backstack is emptied if the dashboard
is selected. Also, it is checked now before selection of a view, whether
the view is already shown on the screen.
Merge pull request #150 from bpross-52n/develop

Fixed issues #88, #145, #146 and #147