Merge pull request #250 from agbeltran/development

Dealing with term URIs.
Removing local userHistory and using OntologyManager instead
Removed unused field
Added link to Ontology in info panel.
Updated images for investigation, study and assay help.
Added information to tell users why loading takes longer.
Merge remote-tracking branch 'origin/development' into development
Merge branch 'development' of https://github.com/ISA-tools/ISAcreator into development
Merge pull request #252 from agbeltran/development

Merging latest changes from ISA-tools:development