Rename 'web_server' directory to 'web'.
Implement basic deployment of home directory files.

Added user home directory environment configuration to deploy.
Add start-wonderdome launcher script.

This script launches the ruby webserver with the correct environment. It
is called on startup by the user's .xinitrc file.
Factor required libraries into constant.

Add usbhid dependency.
Add dry-run option to rsync helper.
Add deployment tasks for sketch and web app.
Install new dependencies from Gemfile.
Add login configuration to initialize rbenv.