Convert URLS

Find description fields > if field is an input (in edit mode) return
false > else grab content > find urls > convert to link > change
description tex/html to include new link.
Merge branch 'Feature_20_convert_urls'
Merge branch 'master' into production
Added basic functional tests for User controller.
Merge branch 'production' of https://github.com/bamboocreative/listsIO into Task_UserControllerTests
Update deployment config
Updated deployment config
Merge branch 'Task_UserControllerTests' into development
Added nl2br support for list item descriptions.
Fixed issues with autoconverting urls/nl2br.
Move nl2br out of model and into template.
Added listsio environment variable, used to prevent loading GA and intercom scripts on all but production.
Removed DB Update from deploy config.  YOU MUST MANUALLY UPDATE THE PROD DB BEFORE DEPLOYING CHANGES THAT REQUIRE DB UPDATES