Fixes for user named graph; Jena Version 3.2.0

• FIX "user form is saved in 2 named graphs"

• FIX graph associated to user: ensure it is an absolute URI;

• FIX /sparql when there is no Accept: header

• REFACTOR CSS (WIP)

• Jena Version 3.2.0

• Create foaf:OnlineAccount for each user

• optimizations after passing YourKit: Store the compiled query in InstanceLabelsFromLabelProperty

• Added a button to access an ontologies view (WebVOWL)

• zoom thumbnails