not accepting nested attributes for contents
Building initial default content after_initialize
content-ui starting to come together
Started updated the content-ui. Not complete, but getting there.

Still lots to do, but I think this is a good start. I’m hoping that the
test coverage will also increase with this commit.
this file was missed in the previous commit
Merge branch 'master' into feature/content-ui
Merge pull request #27 from MomentumCMS/feature/content-ui

Feature/content ui
Merge branch 'master' into feature/better_tag_error_handling