Improvements to search.

- Improvements to species names
- Added support for iOS 13 and newer iPhones and iPads

– Fixes missing Norwegian species names (oops, sorry!)
– Fixes issue when searching using non-English species names

App optimisation and bug fixes.

• Completely new design provides improves navigation.
• Compare mode allows side-by-side comparison of any species. A curated Similar Species list helps to compare the most confusable species.
• Secondary names allow species names to be viewed in two user-chosen languages.
• Illustrations have been digitally enhanced and are at higher resolution than previous versions.
• Star feature allows a species to be added to Favourites list.

Improved scrolling, various bug fixes