Remove last remenents of localForage.
Update non-pgp-namespaced localStorage Keys.

Repace final localforage calls with localStorage.
Right-click menu refers to non-existent pgp app.

The 'pgp' app is now listed in all-caps as PGP.
Merge pull request #3 from bramwelt/remove-localforage-calls

Remove localForage Calls & Fix app name in right-click menu