Update framework.js

Added prepend option '^' for AJAX framework "data-request-update" parameter
Merge pull request #270 from john-mark-wilkinson/master

Update framework.js
Merge pull request #271 from OctoDevel/master

Add pt-br language for backend
Minor
Fixes #255 - Adds a code editor settings page
Email layouts now work
Form fields now support context in their names
Add PDF file extension
Fixes "security vulnerability"
Update to Laravel 4.2
Required update for Laravel 4.2