[ Web Can ] Download & Restore a command set

[kammce]

Depends on #12

The idea here is that users can download the set of commands that they have used previously. Allowing users to start a session with a pre-set list of commands. The file format for these commands should be human readable and writable allowing users to make their own list of commands without having to first issue them via the website. This would allows users to distribute their list of commands to clients, others users, contributors, and developers for testing.

Bonus idea

Add hotkey capabilities to allow the user to send commands without having to click the command.

Bonus bonus idea

Allow a gamepad controller to be hot keys as well

[kammce]

Provide download and upload as a CSV
JSON could be a bonus.