rhbz980658 add contentLocation to HRawDocument in preparation for content migration
rhbz980658 move blob content field out of HRawDocument
rhbz980658 implement blob access from temporary table
rhbz980658 add jndi property for document file storage location
remove accidentally added imports
rhbz980658 add and use file system persist service
Merge branch 'master' into isolate-file-storage

Conflicts:
	zanata-war/src/main/java/org/zanata/file/GlobalDocumentId.java
        lombok annotations added in remote, toString added in local.
        kept changes from remote + toString method.
rhbz980658 migrate raw documents to file system
rhbz980658 drop (empty) temporary blob table
rhbz980658 remove remaining blob-based implementation for raw file persistence
rhbz980658 change jndi property name for document storage directory
rhbz980658 update TODO comment
rhbz980658 change component name of FileSystemPersistService
rhbz980658 update TODO comment
rhbz980658 use fileId instead of contentLocation to refer to raw file lookup key
Merge pull request #73 from zanata/isolate-file-storage

WIP: raw file migration from database to file system