Names can be passed to commands with @ prefixed to them.
When forcing a color change on another user the @ explicitly defines
the name, instead of simply being stripped off. This will allow the
a user named "red" to have their color changed: `/color @red blue`
A bunch of the color command code has changed with this to make things
less ambiguous and to add some other checks. `/color red #FF0000` and
`/color @red red` will change the color of the user "red" to the color
red while `/color red red`will return with an error. Note that the
color an name arguments can be in any order.
Resolves#64
Moved to common/utils.go:
- IsValidName() (function replaces direct calls to regexp.MatchString())
- RandomColor()
Moved to common/emotes.go:
- LoadEmotes()
