Merge branch 'master' of https://github.com/molgenis/molgenis
Remove custom.js

This was used to change the abbreviation of the dataexplorer header.
That should be done using configuration instead.
Revert search in MRef fields.

This was introduced for ASE gene lookup.
Made a Trac story #2711 instead.
See http://www.molgenis.org/ticket/2711
Merge pull request #1724 from fdlk/feature/ase-revert

Reverts two changes made for ASE.