delete old code for temporary cagelabels
fix: printed null values on cagelabel replaced by empty string.
add option to select default (breeding) cagelable layout in print labl
plugin.
bugfix: print custom label works again.
Merge branch 'testing' of git://github.com/molgenis/molgenis_apps
Merge pull request #397 from paraiko/master

bugfixes and feature enhancements for print label plugin in animaldb