MB-9307: Don't replace the full header

After a rollback, don't use the full header information
from the on-disk header, but only the state of the
ID-btree and the views trees.

Also update the sequence numbers of the indexable and
unindexable partitions to match the ones of the on-disk
header it was rolled back to.

Change-Id: Iecf95d38f5111923cb6239adb0b7d824e625b5a3
Reviewed-on: http://review.couchbase.org/30016
Reviewed-by: Volker Mische <volker.mische@gmail.com>
Tested-by: Volker Mische <volker.mische@gmail.com>