Merge pull request #1074 from dennishendriksen/master

Fix #1056 MolgenisUser superuser=true does not assign authority ROLE_SU
fix wrongly placed "pagesize" in elastic search searchrequest
fix entityExplorer (algorithm improvment + search pagesize)
fix drawing issue
open dataset in same window/tab
fix genomebrowser bug, tracks were draw twice on refresh
Merge pull request #1075 from bartcharbon/master

bugfixes for entityexplorer en genomebrowser
do not rely on default encoding
CatalogItem is never null
CatalogItem is never null
values are never null
do not expose internal representation
prevent possible NPE
remove unused variables/imports
ignore findbugs warning
use efficient entrySet insteaf of inefficient keySet
ignore findbugs warning
close connection
add delete check, remove unnecessary try/catch
ignore findbugs warning