Add precompiled assets for Heroku
Try precompiling again
Update link_tags
Revert "Try precompiling again"

This reverts commit 4ed14ae1e8bac45b3890f67d86f3eae5d0aaf652.
Revert "Update link_tags"

This reverts commit 5a55e6bc3a4ebe189b27fb9973310ac398c18a0f.
Update config
add some gems