Added compression to block offsets and start doc ids.
Fixed handling of records that span Bz2 blocks.
Merged big record fix from master
Fixing Bzip2 based DocumentCollection...
Fix ajax request order on page load.
Always show the results box as it contains the ajax request spinner.
Added caches on document retrieval.
Re-factored BZ2 OuputStream creation in DocumentCollection.
Switched term maps to use dump files.
Added checksum to compressed DocumentCollection file.
Merge branch 'CompressedDcOffsets'
Sort right class tree by instance count.