Fixed duplicate display of dashboard after car...

... selection.
Cache cars to be able to select cars without...

... internet connection.
Merge pull request #156 from matthesrieke/develop

new drivedeck stuff
Prevent app from trying to download tracks...

... if no internet connection is available.
Enable creation and use of new car if no...

... internet connection is available.
Merge pull request #160 from matthesrieke/develop

Start-Stop Button Redesign; Engine Displacement in Car properties
Merge pull request #161 from matthesrieke/develop

introduce test project
Merge pull request #163 from matthesrieke/develop

Develop
Merge pull request #164 from matthesrieke/develop

Develop
Assign temporary id to new cars..

... that can at time not be uploaded to the server. Temp ID allow the
creation of LOCAL tracks with different LOCAL cars. The local cars will
be uploaded to the server before the track is uploaded.
This fixes #130 and #166 plus some minor issues
Merge pull request #167 from bpross-52n/develop

This fixes #130 and #166 plus some minor issues
This fixes #162
Bugfix...

... start button was not updated when car was selected
Merge pull request #168 from bpross-52n/develop

This fixes #162 and an unknown bug
add thread.id to log.
fix NPE on findViewById
Merge branch 'upstream-dev' into develop