Check if contentstreamlength > 0 in download file
Check if stream.length > 0 in upload file
Replace IOException by return / Add Space in Check Rules log
Add activityListener.ActivityStopped(); before return if null stream
Delete temp file on download if contentStream is null
Update : temp delete file
#128 - Upload is manage by CreateContentStream

as https://issues.apache.org/jira/browse/CMIS-632
Upload is no more manage by update an empty file but by create a full
contentstream (as before)
#127 - Adding Test before create repo folder

Check if root folder exist
Check if root folder is writable