Added icons/images

- Added extension icons and images
- Updated extension version to 0.3.0
Combined CS50 2x functionality

- Implemented CS50 2x functionality
- Added video time/pause and resume functionality
- Removed "We good yo" console.log statements
Fixed a small typo

Changed the CS50 2x not found alerts to actually say CS50 2x and not 2X
Included basic Google Drive APIs

Included googledrive.js and platform.js
Fixed first-launch notepad bug

Fixed first-launch bug that cause two Summernote instances to be
created. Created by replacing jQuery .load() with standard JS .get()