Merge pull request #280 from sampritipanda/css-bug-fix

Moving Sync with Youtube Button To User Edit Page
Added Functionality for Creating Tags by Comma and Tab Key
Fixed Some CSS issues with skills on user show page.
replaced index on document slug, updated documents controller to raise error if project and document are not related
removed tests, will need to be moved to a separate story for the feature
Skills Input by Tab Key fixed for Chrome
CSS Refactoring
dropped, created and migrated database
Merge pull request #284 from sampritipanda/user_skills

Fix Overlapping Skills and Videos and Added new ways to add skills
Merge pull request #283 from yggie/document-slugs

Document slugs