Assets to be precompiled specified in engine.rb
Assets to be precompiled specified in engine.rb

Also fix padding for flash message.
Don’t lowercase the close message
Remove bottom border from close message

Closes #2959
Closes #2961

trevornez/refinerycms,kappiah/refinerycms,anitagraham/refinerycms,KingLemuel/refinerycms,kappiah/refinerycms,hoopla-software/refinerycms,stefanspicer/refinerycms,LytayTOUCH/refinerycms,simi/refinerycms,aguzubiaga/refinerycms,mkaplan9/refinerycms,anitagraham/refinerycms,hoopla-software/refinerycms,simi/refinerycms,mkaplan9/refinerycms,mlinfoot/refinerycms,trevornez/refinerycms,mkaplan9/refinerycms,Retimont/refinerycms,aguzubiaga/refinerycms,simi/refinerycms,refinery/refinerycms,johanb/refinerycms,hoopla-software/refinerycms,Eric-Guo/refinerycms,mabras/refinerycms,mabras/refinerycms,Eric-Guo/refinerycms,refinery/refinerycms,stefanspicer/refinerycms,gwagener/refinerycms,LytayTOUCH/refinerycms,Eric-Guo/refinerycms,anitagraham/refinerycms,KingLemuel/refinerycms,chrise86/refinerycms,KingLemuel/refinerycms,johanb/refinerycms,kappiah/refinerycms,johanb/refinerycms,mlinfoot/refinerycms,chrise86/refinerycms,gwagener/refinerycms,Retimont/refinerycms,mabras/refinerycms,mlinfoot/refinerycms,chrise86/refinerycms,refinery/refinerycms,gwagener/refinerycms,LytayTOUCH/refinerycms,trevornez/refinerycms,stefanspicer/refinerycms,aguzubiaga/refinerycms,Retimont/refinerycms,simi/refinerycms