Fullscreen Header Toggle
Prevent a glitch when window is maximized on windows
Implemented a way to dynamically register commands and aliases
Fix autocomplete for commands
move internal commands from command.js to client.js
Per mephux's request
Merge pull request #144 from mephux/commands

Implemented a way to dynamically register commands and aliases
Merge pull request #145 from AlexKvazos/fullscreen-toggle

Fullscreen toggle
Fix issue #139
Remove inadvertent semicolon that came in from PR #145