Revert "Added defaults for ItemsToProcess and ItemsProcessed"

This reverts commit a5525f9c19f0193ff854eafc1dd705868dc8d34b.
Revert "Added defaults for ItemsToProcess and ItemsProcessed"

This reverts commit 6ffc38735f35dd5bf39fa40959ab0482438c496b.
Revert "moved textSource back into loadManifest()"

This reverts commit 8109f7024da6b385653202761660f33a80584fda.
Revert "allow processing of multiple manifests assuming they annotate the same texts"

This reverts commit 3ba6260a80fa5c025c6a33cd5a4f493fe6b16dd3.