Ported from platform 5
Marking upload progress as failed if no files parsed to be uploaded, sending error to the user
Merge branch 'master' of https://github.com/idega/com.idega.content into BRANCH_PLATFORM_5

Conflicts:
	src/java/com/idega/content/upload/business/ContentDownload.java
	src/java/com/idega/content/upload/business/FileUploader.java
	src/java/com/idega/content/upload/business/FileUploaderBean.java
	src/java/com/idega/content/upload/presentation/FileUploadViewer.java