61b93d953d
Previously, course tabs would only be created once and never try to update the default tabs again. This leads to an issue if you ever want to add a new tab. With this command, you can now update the default tabs for all existing courses and new courses will pick it up upon creation when CourseTabList.initialize_default is called.
common ------ This directory contains common code shared between LMS and CMS, such as Mako templates, CSS, and Coffescript.