Update Bootstrap to 2.2.1 and remove 2.0.4 and 2.1.1
index: Add a ribbon in the top right corner to show version number
models: Add overrides property to each study model
views: Remove caching from several views. Add onShow() function to setup event handlers
Form: Add Preview button. Add save/preview shortcuts (Ctrl+S,Ctrl+P)
Study: Add options to override defaults
added bootstrap 2.2.1