FEATURE: new title_sanitize site setting
better admin quick start guide
add SSO note to admin quick start
add note about private forum/category
clarify why email is important
fix english
FEATURE: handle 2 levels of categories in vanilla import
Update INSTALL.md
initial move of common desktop/mobile styles to common/base
Merge pull request #2280 from awesomerobot/master

initial move of common desktop/mobile styles to common/base
pulling some more styles out of desktop/mobile to common/base
pulling some more styles out of desktop/mobile to common/base
Merge pull request #2283 from awesomerobot/master

pulling some more styles out of desktop/mobile to common/base
add section on User Trust to admin quickstart
fix pin message copy
admin quick start guide improvements
missed a pin copy
stray S
desktop composer fix
Merge pull request #2285 from awesomerobot/master

desktop composer fix