Fix crash running paster command with multilingual plugin

The multilingual plugin will crash if it's enabled when certain paster
commands are run. This fixes the crash.
[#1768] Fix for the home page - featured group/organization did not show its datasets.
Merge branch 'master' into 1768-organization-list
[#1768] Fix for the home page - regression test added.
[#1768] Fix for the home page - refix.
[#1418] Better error messages for NAVL junk.
Merge branch 'multilingual-plugin-crashes-paster-commands'
Merge branch '1418-junk-errors'
Merge branch '1768-organization-list'