new gems
removed deflate
added config - deflate
removed deflater
remove deflate
added heroku_deflater
moved gem sass
removed sass
added dalli config
changed config assets compile
modified config.rb
removed dalli_store
removed dalli_store
removed rack config
added dalli_store
added cache to issues json
added sass gem
added use RackCache
added memcacher gem
added memcachier gem