Require latest MRI 2.0 version
Remove sidekiq stuff.

We will cleanly add this, when it is needed ...
Remove unneeded gems
Use pry-byebug to support ruby 2.0
Add TODO comments
Delete model stuff

The model library has been moved to the mlk gem:
https://github.com/pfleidi/mlk
Remove mlk tests; move test/spec -> test/unit
Rename test -> spec
Rename test tasks; add combined test task; fix Mlk deps
Replace Model with extracted Mlk::Model
Require file storage
Use minitest/pride for colorful test output
Refactor text filtering pipeline and tests
Add rendering helper and tests
Remove unneeded text content test
Fix text filter integration and tests
Merge branch 'extract_model'

Conflicts:
	Gemfile
Revert "remove manual date parsing, this is handled by yaml"

This reverts commit 2a5eda642e5b5cf5d7cd356dbf75013e199fca8f.
Update gems
Fix asset serving