carrierwave, document model and uploader
fix model for documents
Fix username string checking from .empty? to .blank? to avoid null class method call
basic document uploading, titles
view course files
ability to delete course files
fixed double-store upload bug & document validation
nicer page titles
abilities for documents and capsules
fixed document model + ability syntax
partial for document lists, UI tweaks
Merge pull request #17 from grahamcracker/courses_frontend

Fix username string checking from .empty? to .blank? to avoid null class...
Some minor changes
spacing..
Hash rockets are so Ruby 1.8...
Styling for password controllers, fixes #8
document upload + list for course, capsule, and lectures
merge changes for document uploading
fixed document deletion bug
Passwords styling