Merged in bugfix/errhandling (pull request #89)

Error handling

* basic

database/queries/text.sql

@@ -6,7 +6,7 @@ SELECT EXISTS(
 -- name: AddDocumentTextEntry :exec
 INSERT INTO documentTextExtractions (version, bucket, key, cleanEntryId) VALUES ($1, $2, $3, $4);
 
--- name: GetDocumentTextEntry :one
+-- name: GetTextEntryByDocId :one
 SELECT id, documentId, bucket, key, version, cleanEntryId
     FROM currentTextEntries
     WHERE documentId = @documentId;