added Heroku config changes
testing production asset precompile list for conditional assets
added highlightJS stylesheets to product assets precompile list
added asset precompile search for hljs and ace files
fixed typo in assets precompile config
precompile assets for ace and hljs - searches for files in folders
switch to loading ACEeditor from s3
remove old view tracker from ember app
fixed bug if tag list empty
fixed bug for logged_in user without a theme set
switched to use user specified language only
added basic validation of unique username, email and 6+ char password