consider www to be the same domain & lower case domain_name
require tenant
unscope user model
restict role type in models
enable postgres hsotore & add rails preference_object for modularization
fix wrong migration info in users
finish modularize order & enable apis
basic course sidebar perfs
sidebar items drap&drop re-order
now models can extend modularize functions & dynamically update navbar
bulk update names in settings
add relations to annoucement & course
disable items when checkbox unchecked
css for course settings index
css for course_settings sidebar
all submit buttons to center align
announcement UI enhancement
update to simple_form 3.1
raise Error when module is disabled
rename modularize to modularity