This patch moves the discard progress functionality from the tiny icon
at the top right corner of the progress display to the options menu.
The reasoning for this is that resetting progress is an option which is
unlikely to be used very often and therefor does not need to be on the
main screen. In addition to that, the menu already holds the related
options to mark the book as finished and to discard the progress of a
finished book.
Finally, this removes the tiny icon which does not really match the rest
of the user interface of the app.
This patch fixes the separators between metadata list entries in the book
detail view. Items were separated only by comma. A space was missing.
This just adds a space to both the genre as well as to the narrator
separators.
