Kraken Stash Skin Bundle (Currency Stash) Tab Index

Problem:
Currency Stash and Stash store the same page-open index

This leads to the user feeling disoriented when using both stashes in their hideout.

Solution:
Currency Stash & Stash store separate tab index variables

Repro Steps:
1. Set currency affinity on the last tab in the stash
2. Open normal Stash, first tab opens
3. Open currency Stash, last tab opens
4. Open normal Stash, last tab opens, Expected: first tab opens