Updated item list, and changed the way items are handled.

- updated the list to contain all the items listed on 
animalcrossingnl.mooo.com.  

- All items are now linked to their proper categories, all that's left 
is to fill in sets, series, themes, and styles.  Items can be sorted by
category now.

- French, italian, german, spanish, and japanese item names are now
supported, an option just needs to be added to change between them.

- In order to support the other languages, the masterIndex.txt file and
the userIndex.txt file now use UTF-8 character encoding, changes made to
the code to reflect that.

Todo
- Finish updating the item parameter lists
- Remove "fossil" from type
- make sure ANSI userIndex files are still read and compared properly

options to add, should save on exit
- language
- item list read only
- images/ window size