fix templating syntax error
provide default LOCALES
Merge pull request #450 from PyBossa/fix-i18n-template

fix templating syntax error
Merge pull request #451 from mk270/fix-locale-default

provide default LOCALES
PEP-8 Compliant. Refs #454
Fix to load only the requested importer. Closes #454
Merge pull request #455 from PyBossa/issue-454-importers

Issue 454 importers
manually merge PEP8 bump
add separate forms for each import handler
pass template through to worker function