ALM-616 added cucumber tests for publisher import
make the scrollbar always visible to prevent flicker
ALM-616 more publisher cucumber tests
update to v.3.1.1.1 bootstrap-sass gem
Lock bootstrap-sass gem 3.1.1.1
added cache_key to doc model
small tweak for doc model caching
small changes to docs cache key
include updated_at in doc cache_key
fix logic to collect file modification time
added missing cache_key
simplify partial code for docs