Rename for consistency
Reformat questions.json to a sensible format
Start a proper class hierarchy for Question-related stuff. Added
IQuestion and a base abstract implementation (BaseQuestion)
Factorize the SharedPreferences editor
PollsStorage and QuestionsStorage should be good to go
Worked on the UI classes for adapting a question to a view and vice
versa
Slider question type should be good to go
MultipleChoiceQuestion should be good to go
Fix mistakes to have first launch complete
Add debug info
Cancel any existing PollService intents
Fix loading of questions
Fix mistakes in SchedulerService
Fix location (de)serializing
Add dummy getType in interface so as not to forget the `type` member in
implementations
Merge pull request #42 from wehlutyk/feature/proper-json-and-class-hierarchy

Proper json and class hierarchy
Merge branch 'develop' into feature/documentation