In options page, only show Hekate option if hekate ini file found.

In main page alert user if no payloads were found and no hekate ini file found.

HekateBrew.nro is from now in HekateBrew folder

(if coming from a previous release, delete HekateBrew.nro from switch folder)

Fix:

• "Reboot to Hekate" from main menu
• Hekate options page