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.
[#1495] add res_type to solr schema
[#1672] Tweak to testing guidance about grouping tests
[#1495] solr schema versions are floats
[#1495] test for res_type in solr index
[#1495] leave schema version at 2.3
[#1396] Updated HTML contrubuting docs to be more up to date
Merge branch '1672-test-guidance-tweak'
Merge branch '1396-html-contributing-docs'
Merge branch '1495-index-resource-type' of https://github.com/wardi/ckan into wardi-1495-index-resource-type
Merge branch 'wardi-1495-index-resource-type'
Merge branch 'multilingual-plugin-crashes-paster-commands'
Merge branch '1418-junk-errors'
Merge branch '1768-organization-list'