Add polymorhpic parent relationship to slides
Move project content to description, show on main page
Render the project content on the main page
Style the description field on the project page
Style the description field on the project page
Project page stylesheet changed
Make steps use slide model
Merge pull request #73 from teamleada/mark/slide-model

Slide model for steps and lessons. Project content on main project show view
Show text if on lesson or step