Added better error checking and HTTP response codes to serviceDocumentAction().
Continued work on createSubmissionAction.
Added function-level documentation to SWORD default controller; started work on swordStatementAction.
Work on swordStatementAction.
Fixed main routing config; removed dateAddedToAU property from Content entity.
Added ExternalTitleDbs entity.
Fixed ExternalTitleDbs entity.
Added box details to swordStatementAction.
Merge branch 'sword'