Merge pull request #820 from erwinwinder/master

Revert changes to make molgenis compile, data aoi changes
add update value to value converter
add update value test case
store db user and password in molgenis-server.properties
allow anonymous user to see home plugin
type: remove @
revert changes
add anonymous user, define anonymous user roles in security config, deny URLs by default. see #819
set menu base url authorities
menu URL fixes
add some hierarchical permissions
fixes related to #819
remove unused member
Merge pull request #821 from dennishendriksen/master

Add update existing value to value converter + various
Let the entities importer and validator make use of the new data api.
Temporarely move the molgenis-data code to core to prevent circular references