Update guard gem (supports USR1 and USR2 signals again)
Use normal release of spring gem
Refactor Bowerfile to use correct assets
Don't resolve relative paths before precompiling using bower-rails.

See https://github.com/42dev/bower-rails/issues/79
and https://github.com/jmuheim/base/pull/35

Let's hope this works in production.
Always install bower dependencies before precompiling
Add infos on how to manage assets using Bower