Major commit:
- Database is now fully functional
- Renamed the word .example in packages to .ist
- Renamed every monument word with interestpoint
- Deleted restaurants class (there was already a restaurant class)
- Added Item, ItemAdapter, SectionItem classes (and respective xml's)
- Added PublicTransportItem, RestaurantItem, InterestPointItem
- Moved activity related classes to com.ist.ui.activity package