Index objects if Prev xref was not found
Takes chunk id == 0 into account during grouping
Fixes find position in HiDPI displays
Merge pull request #3964 from yurydelendik/issue-3962

Fixes chunks grouping
Merge pull request #3968 from yurydelendik/hidpi-2

Fixes find position in HiDPI displays
Fix page rotation for unloaded pages.
Merge pull request #3954 from yurydelendik/invalid-start

Index objects if Prev xref was not found
Merge pull request #3970 from brendandahl/rotation

Fix page rotation for unloaded pages.