A few misc changes
Clarify resultURL string generation in Profile.prototype.getUrl() function  and check for undefined when url_protocol is included to fix a bug.
Future-proof PBKDF2 key derivation by storing iteration count with salt so the iterations can be increased if needed in the future.
Changed localStorage access into functional getItem & setItem function calls.
Fixed an import bug where profile strength can't be checked immediately after import.
Added Settings.ifDataExists() function to simplify a few checks.
Restore old algorithm selection but warn when an old algorithm is in use.
Update to 0.7.0