1. Read/write async tasks of the persistence manger used by
the FusedPrintersProvider could be run more that once, so
create a new one every time.
2. The fake printer used to save to PDF should not be added
to printer history.
3. Removed print preview leftover code from the print dialog.
4. Save to PDF was not working on the second consecutive attempt.
5. The fisrt time the orientation change was ignored - regression
Change-Id: I8960ef2cf92dfeeec22fa8751ba8475092b5b65c
a36285f3f2