New settings screen with banners repo and fixed output folder

thanks to @amynbe

Fix tmd generation

compile nuspacker using java 8

this should fix the tmd generation

Fix language selection in nincfg.bin

v3.0.16

Fix nincfg language selection

v3.0.15

fixed #18

Don't delete GC's second disc image

v3.0.14

Bump version

Only delete nuspacker's temporary folders if they exist

v3.0.12

bump again (oops)

3.0.11

Added option to open the output folder after the conversion.

v3.0.10

updated WIT

v3.0.9

Fixed link to guiformat's website

v3.0.8

Nintendont settings: Added option to select the controller slot used by the Wii U Gamepad.
Fixed broken jnustool that I had added previously.