Fixed Inventory double-loading bug.

The inventory tab screen would load the first shown tab twice.
Additionally, the tab screen would load the wrong first tab. Both fixed.
Moving Login activity to new package.

Separated out pre-login activity in preparation for adding further
pre-login actions (i.e. see announcements, signup, etc.)
Improve funkslinging to accept/use two items.

Funkslinging dialog is now somewhat functional. Still need to determine
the exact URL for submitting two items at once.