Removed List/Add from individual points in Research sidemenu.
Sort by date by default in Research.
Added pubMedName to entity PrincipalInvestigator. Removed nameFormat() and replaced it by getFullName() and getShortName().
Cosmetics
Made use of css class .not-found for Research.
PubMedRefs: Check checkbox when clicking on edit.
Use essn if issn is not available to retrieve impact factor.