Merge tag '0.8' into develop

Changes:
* Don't show a poll if questions haven't been downloaded yet
* Some NullPointerException fixes
* Add option initialRating to StarRatings
New try at redesigning the measures activity (with rephrased text and
some titles removed)
A little more rephrasing in the Measures activity
Merge tag '0.8.1' into develop

Rephrasings and cleanup of measures activiy
externalizing links in additional text in terms activity
Update links

links file badly created
Description ui enhancement
further enhancements
final ui improvements
Change scheduling interval
Merge branch 'develop' of github.com:wehlutyk/daydreaming into develop
Bump version
Merge branch 'release/0.9'