Implemented access keys in #PfP, pressing Alt will show you all of them. Access keys have always been a major #l10n pain, so this time I decided to choose them automatically - seems to work reasonably well. Only few UI elements will change their access key depending on context.
After some iterating, things look somewhat better now, in particular less cluttered - access keys are indicated by underlining the letter wherever possible. This is how the same screen looks now when pressing the Alt key.