Merge pull request #60 from elihart/cursor

Cursor
One way input mirroring
Radio buttons and check boxes mirror
Text area mirroring
Single select elements mirror. Need to support multiple
Multiple select now mirrors
Highlight clicked element
Input mirroring abstracted to own class
Add off method to InputMirror and decouple send methods
Merge pull request #61 from elihart/input

Input
Use background image for cursor